TY  - JOUR
AU  - Šamanc, Horea
AU  - Gvozdić, Dragan
AU  - Fratrić, Natalija
AU  - Kirovski, Danijela
AU  - Đoković, Radojica
AU  - Sadojević, Zeljko
AU  - Cincović, Marko
PY  - 2015
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1176
AB  - The aim of this study was to investigate the relationship between the loss in body condition score (BCS) and loss (ΔBCS), energy balance (EB), hepatic lipidosis and blood serum concentration of non esterified fatty acids (NEFA), glucose, triacylglycerol (TAG) and total bilirubin (tBIL) in healthy dairy cows during transition period. Twenty healthy Holstein cows were included and categorized into groups based on BCS loss (ΔBCS) between dry period and early lactation (ΔBCS  lt 0.75 and ≥0.75). Significant differences between groups (p lt 0.05) were observed for blood serum NEFA, glucose and tBIL. Cows with high ΔBCS (≥0.75) between dry period and early lactation showed increased blood serum NEFA, TAG and tBIL concentrations and lower blood serum glucose concentration during transition period, compared to the low ΔBCS cows ( lt 0.75). Metabolic profiles of cows during transition period indicate high level of lipid mobilization from adipose tissue, possible decreased liver cells TAG export and gluconeogenic ability and impaired bilirubin metabolism if ΔBCS is increased by more than 0.75 points. ΔBCS was in relation with energy balance (EB) in transition period.
PB  - Polska Akad Nauk, Inst Genetyki I Hodowli Zwierzat, Mrokow
T2  - Animal Science Papers and Reports
T1  - Body condition score loss, hepatic lipidosis and selected blood metabolites in holstein cows during transition period
VL  - 33
IS  - 1
SP  - 35
EP  - 47
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_1176
ER  - 

@article{
author = "Šamanc, Horea and Gvozdić, Dragan and Fratrić, Natalija and Kirovski, Danijela and Đoković, Radojica and Sadojević, Zeljko and Cincović, Marko",
year = "2015",
abstract = "The aim of this study was to investigate the relationship between the loss in body condition score (BCS) and loss (ΔBCS), energy balance (EB), hepatic lipidosis and blood serum concentration of non esterified fatty acids (NEFA), glucose, triacylglycerol (TAG) and total bilirubin (tBIL) in healthy dairy cows during transition period. Twenty healthy Holstein cows were included and categorized into groups based on BCS loss (ΔBCS) between dry period and early lactation (ΔBCS  lt 0.75 and ≥0.75). Significant differences between groups (p lt 0.05) were observed for blood serum NEFA, glucose and tBIL. Cows with high ΔBCS (≥0.75) between dry period and early lactation showed increased blood serum NEFA, TAG and tBIL concentrations and lower blood serum glucose concentration during transition period, compared to the low ΔBCS cows ( lt 0.75). Metabolic profiles of cows during transition period indicate high level of lipid mobilization from adipose tissue, possible decreased liver cells TAG export and gluconeogenic ability and impaired bilirubin metabolism if ΔBCS is increased by more than 0.75 points. ΔBCS was in relation with energy balance (EB) in transition period.",
publisher = "Polska Akad Nauk, Inst Genetyki I Hodowli Zwierzat, Mrokow",
journal = "Animal Science Papers and Reports",
title = "Body condition score loss, hepatic lipidosis and selected blood metabolites in holstein cows during transition period",
volume = "33",
number = "1",
pages = "35-47",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_1176"
}

Šamanc, H., Gvozdić, D., Fratrić, N., Kirovski, D., Đoković, R., Sadojević, Z.,& Cincović, M.. (2015). Body condition score loss, hepatic lipidosis and selected blood metabolites in holstein cows during transition period. in Animal Science Papers and Reports
Polska Akad Nauk, Inst Genetyki I Hodowli Zwierzat, Mrokow., 33(1), 35-47.
https://hdl.handle.net/21.15107/rcub_veterinar_1176

Šamanc H, Gvozdić D, Fratrić N, Kirovski D, Đoković R, Sadojević Z, Cincović M. Body condition score loss, hepatic lipidosis and selected blood metabolites in holstein cows during transition period. in Animal Science Papers and Reports. 2015;33(1):35-47.
https://hdl.handle.net/21.15107/rcub_veterinar_1176 .

Šamanc, Horea, Gvozdić, Dragan, Fratrić, Natalija, Kirovski, Danijela, Đoković, Radojica, Sadojević, Zeljko, Cincović, Marko, "Body condition score loss, hepatic lipidosis and selected blood metabolites in holstein cows during transition period" in Animal Science Papers and Reports, 33, no. 1 (2015):35-47,
https://hdl.handle.net/21.15107/rcub_veterinar_1176 .

TY  - JOUR
AU  - Kirovski, Danijela
AU  - Adamović, M.
AU  - Radivojević, Mihajlo
AU  - Šamanc, Horea
AU  - Vujanac, Ivan
AU  - Prodanović, Radiša
AU  - Sladojević, Željko
PY  - 2015
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1185
AB  - In order to ascertain the effects of addition of bentonite as a pelleting medium in the feed mixture for calves, fourteen 30d-old calves were randomly distributed into two equal groups (CON and EXP). From 30 to 120d of age the EXP group was fed a feed mixture containing 1.5% of natural bentonite while the CON group was fed the same pellets without added bentonite. Body weight was determined before and at the end of the trial. Feed intake was measured daily. Health status was monitored daily. Blood and rumen content samples were taken at 50 and 90d of experiment and analyzed for select parameters. The addition of bentonite had no effect (P > 0.05) on average daily gain, feed intake and health. Blood pH, total number and motility of ruminal protozoa in the EXP group were significantly (P < 0.001, P < 0.05 and P < 0.05; respectively) higher than in CON group at both the periods. At 120d of age the EXP calves had a significantly (P < 0.05, P < 0.05 and P < 0.01; respectively) higher serum total protein, albumin and triglyceride concentrations and lower iron and IGF-I (P < 0.05 and P < 0.01, respectively) concentrations than respective controls values. It is concluded that the use of pelleted feed containing bentonite tended to improve growth of calves as well as the activity of protozoa in the rumen. Additionally, the results indicate a positive influence of the function of hepatocytes concomitant to a reduction in serum iron and IGF-I concentrations.
PB  - Animal Nutrition Assoc, Izatnagar
T2  - Animal Nutrition and Feed Technology
T1  - Effects of Bentonite on Weight Gain, Feed Consumption, Blood Metabolites and Ruminal Protozoa in Dairy Calves
VL  - 15
IS  - 1
SP  - 11
EP  - 20
DO  - 10.5958/0974-181X.2015.00002.5
ER  - 

@article{
author = "Kirovski, Danijela and Adamović, M. and Radivojević, Mihajlo and Šamanc, Horea and Vujanac, Ivan and Prodanović, Radiša and Sladojević, Željko",
year = "2015",
abstract = "In order to ascertain the effects of addition of bentonite as a pelleting medium in the feed mixture for calves, fourteen 30d-old calves were randomly distributed into two equal groups (CON and EXP). From 30 to 120d of age the EXP group was fed a feed mixture containing 1.5% of natural bentonite while the CON group was fed the same pellets without added bentonite. Body weight was determined before and at the end of the trial. Feed intake was measured daily. Health status was monitored daily. Blood and rumen content samples were taken at 50 and 90d of experiment and analyzed for select parameters. The addition of bentonite had no effect (P > 0.05) on average daily gain, feed intake and health. Blood pH, total number and motility of ruminal protozoa in the EXP group were significantly (P < 0.001, P < 0.05 and P < 0.05; respectively) higher than in CON group at both the periods. At 120d of age the EXP calves had a significantly (P < 0.05, P < 0.05 and P < 0.01; respectively) higher serum total protein, albumin and triglyceride concentrations and lower iron and IGF-I (P < 0.05 and P < 0.01, respectively) concentrations than respective controls values. It is concluded that the use of pelleted feed containing bentonite tended to improve growth of calves as well as the activity of protozoa in the rumen. Additionally, the results indicate a positive influence of the function of hepatocytes concomitant to a reduction in serum iron and IGF-I concentrations.",
publisher = "Animal Nutrition Assoc, Izatnagar",
journal = "Animal Nutrition and Feed Technology",
title = "Effects of Bentonite on Weight Gain, Feed Consumption, Blood Metabolites and Ruminal Protozoa in Dairy Calves",
volume = "15",
number = "1",
pages = "11-20",
doi = "10.5958/0974-181X.2015.00002.5"
}

Kirovski, D., Adamović, M., Radivojević, M., Šamanc, H., Vujanac, I., Prodanović, R.,& Sladojević, Ž.. (2015). Effects of Bentonite on Weight Gain, Feed Consumption, Blood Metabolites and Ruminal Protozoa in Dairy Calves. in Animal Nutrition and Feed Technology
Animal Nutrition Assoc, Izatnagar., 15(1), 11-20.
https://doi.org/10.5958/0974-181X.2015.00002.5

Kirovski D, Adamović M, Radivojević M, Šamanc H, Vujanac I, Prodanović R, Sladojević Ž. Effects of Bentonite on Weight Gain, Feed Consumption, Blood Metabolites and Ruminal Protozoa in Dairy Calves. in Animal Nutrition and Feed Technology. 2015;15(1):11-20.
doi:10.5958/0974-181X.2015.00002.5 .

Kirovski, Danijela, Adamović, M., Radivojević, Mihajlo, Šamanc, Horea, Vujanac, Ivan, Prodanović, Radiša, Sladojević, Željko, "Effects of Bentonite on Weight Gain, Feed Consumption, Blood Metabolites and Ruminal Protozoa in Dairy Calves" in Animal Nutrition and Feed Technology, 15, no. 1 (2015):11-20,
https://doi.org/10.5958/0974-181X.2015.00002.5 . .

TY  - JOUR
AU  - Nešić, Ksenija
AU  - Šamanc, Horea
AU  - Vujanac, Ivan
AU  - Prodanović, Radiša
AU  - Nešić, Vladimir
AU  - Velebit, Branko
AU  - Savić, Božidar
PY  - 2014
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1111
AB  - The ban of processed animal proteins (PAP) in feed for farmed animals led to a significant reduction of the number of BSE cases ever since bovine spongiform encephalopathy (BSE) was proven to be a feedborne disease. Although optical microscopy has been the only reference method for the detection of PAP for years, the EU legislation also foresees that other methods may be applied in addition to the microscopy, if they provide appropriate information about the origin of the animal constituents present in animal feed. This was set to become a reality in the European Union from the 1st of June 2013 when meat and bone meal (MBM) was reintroduced in fish feed. This paper presents a comparison and the possibility of combining classical microscopy and conventional polymerase chain reaction (PCR), as complementary techniques, implemented to detect the presence of fish meal and bovine, poultry, pig and mixed MBM in cattle feed. Both methods were also applied on the samples of ruminal fluid of cows fed feed containing MBM. The ruminal fluid was chosen to be tested in order to determine its forensic significance, as it is often not possible to perform the analysis of the incrimiated feed that has already been consumed. In contrast to the high sensitivity of microscopy, the results obtained by PCR showed substantial variability, even when applied to the isolated bones. Particles of animal origin in ruminal fluid were detected only by microscopy.
PB  - Elsevier, Amsterdam
T2  - Animal Feed Science and Technology
T1  - Detection of meat and bone meal in cattle feed and ruminal fluid - Comparison and combining of microscopy and polymerase chain reaction
VL  - 187
SP  - 86
EP  - 90
DO  - 10.1016/j.anifeedsci.2013.11.001
ER  - 

@article{
author = "Nešić, Ksenija and Šamanc, Horea and Vujanac, Ivan and Prodanović, Radiša and Nešić, Vladimir and Velebit, Branko and Savić, Božidar",
year = "2014",
abstract = "The ban of processed animal proteins (PAP) in feed for farmed animals led to a significant reduction of the number of BSE cases ever since bovine spongiform encephalopathy (BSE) was proven to be a feedborne disease. Although optical microscopy has been the only reference method for the detection of PAP for years, the EU legislation also foresees that other methods may be applied in addition to the microscopy, if they provide appropriate information about the origin of the animal constituents present in animal feed. This was set to become a reality in the European Union from the 1st of June 2013 when meat and bone meal (MBM) was reintroduced in fish feed. This paper presents a comparison and the possibility of combining classical microscopy and conventional polymerase chain reaction (PCR), as complementary techniques, implemented to detect the presence of fish meal and bovine, poultry, pig and mixed MBM in cattle feed. Both methods were also applied on the samples of ruminal fluid of cows fed feed containing MBM. The ruminal fluid was chosen to be tested in order to determine its forensic significance, as it is often not possible to perform the analysis of the incrimiated feed that has already been consumed. In contrast to the high sensitivity of microscopy, the results obtained by PCR showed substantial variability, even when applied to the isolated bones. Particles of animal origin in ruminal fluid were detected only by microscopy.",
publisher = "Elsevier, Amsterdam",
journal = "Animal Feed Science and Technology",
title = "Detection of meat and bone meal in cattle feed and ruminal fluid - Comparison and combining of microscopy and polymerase chain reaction",
volume = "187",
pages = "86-90",
doi = "10.1016/j.anifeedsci.2013.11.001"
}

Nešić, K., Šamanc, H., Vujanac, I., Prodanović, R., Nešić, V., Velebit, B.,& Savić, B.. (2014). Detection of meat and bone meal in cattle feed and ruminal fluid - Comparison and combining of microscopy and polymerase chain reaction. in Animal Feed Science and Technology
Elsevier, Amsterdam., 187, 86-90.
https://doi.org/10.1016/j.anifeedsci.2013.11.001

Nešić K, Šamanc H, Vujanac I, Prodanović R, Nešić V, Velebit B, Savić B. Detection of meat and bone meal in cattle feed and ruminal fluid - Comparison and combining of microscopy and polymerase chain reaction. in Animal Feed Science and Technology. 2014;187:86-90.
doi:10.1016/j.anifeedsci.2013.11.001 .

Nešić, Ksenija, Šamanc, Horea, Vujanac, Ivan, Prodanović, Radiša, Nešić, Vladimir, Velebit, Branko, Savić, Božidar, "Detection of meat and bone meal in cattle feed and ruminal fluid - Comparison and combining of microscopy and polymerase chain reaction" in Animal Feed Science and Technology, 187 (2014):86-90,
https://doi.org/10.1016/j.anifeedsci.2013.11.001 . .

TY  - JOUR
AU  - Prodanović, Radiša
AU  - Kirovski, Danijela
AU  - Vujanac, Ivan
AU  - Dodovski, Petar
AU  - Jovanović, Ljubomir
AU  - Šamanc, Horea
PY  - 2014
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1112
AB  - Newborn calves are often deficient in iron and progressive reduction in blood iron concentration occurs over the first weeks of life. Some reports indicate the importance of interactions among iron and components of the insulin-like growth factor system. The aim of the study was to determine if there is a relationship between serum iron and insulin-like growth factor-I concentrations in neonatal calves. Blood samples were collected from 16 female Holstein-Friesian calves on day 10 of age. Erythrogram determination and measurements of serum iron, total protein, albumin, total iron binding capacity and serum insulin-like growth factor-I concentrations were performed. Haematological values were measured using an automatic analyzer, biochemical properties were determined spectrophotometrically, insulin-like growth factor-I concentration was measured by radioimmunoassay. Calves were divided into 2 groups according to iron concentrations; the first group of iron-deficient calves (n = 8, Fe < 10 mu mol/l) and the second group of calves with optimal iron concentration (n = 8, Fe > 18 mu mol/l). Blood indicators in all calves from the first group followed a pattern typically observed in anaemic calves. Insulin-like growth factor-I concentrations were significantly (P < 0.01) lower in the first group compared to the second group. However, insulin-like growth factor-I very strongly correlated with iron in calves from the second group compared to iron-deficient calves (r = 0.624; P < 0.01 and r = 0.478; P > 0.05, respectively). Based on our results, iron seems to have an important relationship to secretion of insulin-like growth factor-I in 10-day-old calves. This is the first report about such relationship in this age group of animals.
PB  - Veterinarni A Farmaceuticka Univerzita Brno, Brno
T2  - Acta Veterinaria - Brno
T1  - Relationship between serum iron and insulin-like growth factor-I concentrations in 10-day-old calves
VL  - 83
IS  - 2
SP  - 133
EP  - 137
DO  - 10.2754/avb201483020133
ER  - 

@article{
author = "Prodanović, Radiša and Kirovski, Danijela and Vujanac, Ivan and Dodovski, Petar and Jovanović, Ljubomir and Šamanc, Horea",
year = "2014",
abstract = "Newborn calves are often deficient in iron and progressive reduction in blood iron concentration occurs over the first weeks of life. Some reports indicate the importance of interactions among iron and components of the insulin-like growth factor system. The aim of the study was to determine if there is a relationship between serum iron and insulin-like growth factor-I concentrations in neonatal calves. Blood samples were collected from 16 female Holstein-Friesian calves on day 10 of age. Erythrogram determination and measurements of serum iron, total protein, albumin, total iron binding capacity and serum insulin-like growth factor-I concentrations were performed. Haematological values were measured using an automatic analyzer, biochemical properties were determined spectrophotometrically, insulin-like growth factor-I concentration was measured by radioimmunoassay. Calves were divided into 2 groups according to iron concentrations; the first group of iron-deficient calves (n = 8, Fe < 10 mu mol/l) and the second group of calves with optimal iron concentration (n = 8, Fe > 18 mu mol/l). Blood indicators in all calves from the first group followed a pattern typically observed in anaemic calves. Insulin-like growth factor-I concentrations were significantly (P < 0.01) lower in the first group compared to the second group. However, insulin-like growth factor-I very strongly correlated with iron in calves from the second group compared to iron-deficient calves (r = 0.624; P < 0.01 and r = 0.478; P > 0.05, respectively). Based on our results, iron seems to have an important relationship to secretion of insulin-like growth factor-I in 10-day-old calves. This is the first report about such relationship in this age group of animals.",
publisher = "Veterinarni A Farmaceuticka Univerzita Brno, Brno",
journal = "Acta Veterinaria - Brno",
title = "Relationship between serum iron and insulin-like growth factor-I concentrations in 10-day-old calves",
volume = "83",
number = "2",
pages = "133-137",
doi = "10.2754/avb201483020133"
}

Prodanović, R., Kirovski, D., Vujanac, I., Dodovski, P., Jovanović, L.,& Šamanc, H.. (2014). Relationship between serum iron and insulin-like growth factor-I concentrations in 10-day-old calves. in Acta Veterinaria - Brno
Veterinarni A Farmaceuticka Univerzita Brno, Brno., 83(2), 133-137.
https://doi.org/10.2754/avb201483020133

Prodanović R, Kirovski D, Vujanac I, Dodovski P, Jovanović L, Šamanc H. Relationship between serum iron and insulin-like growth factor-I concentrations in 10-day-old calves. in Acta Veterinaria - Brno. 2014;83(2):133-137.
doi:10.2754/avb201483020133 .

Prodanović, Radiša, Kirovski, Danijela, Vujanac, Ivan, Dodovski, Petar, Jovanović, Ljubomir, Šamanc, Horea, "Relationship between serum iron and insulin-like growth factor-I concentrations in 10-day-old calves" in Acta Veterinaria - Brno, 83, no. 2 (2014):133-137,
https://doi.org/10.2754/avb201483020133 . .

TY  - JOUR
AU  - Adamović, Milan
AU  - Šamanc, Horea
AU  - Kirovski, Danijela
AU  - Vujanac, Ivan
AU  - Valčić, Olivera
PY  - 2014
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1170
AB  - The objective of the work was to investigate the influence of partial substitution of magnesium oxide with natural bentonite in feed mixtures used in feeding of cows during their exposure to heat stress. The investigation lasted 30 days and was carried out during last ten days of may and first twenty days of June when average air temperature in stables was 36.6±2.5oC. In the experiment there were included 30 cows of Holstein breed in first phase of lactation, which were divided into two groups of 15 cows: control (C) and experimental (E). Group C was fed with experimental mineral mixture that contained 60% of magnesium oxide during the whole investigation period. Group E was fed with experimental mineral mixture that contained 40% of magnesium oxide as well as 20% of natural bentonite. Remaining ingredients in both control and experimental mineral mixtures were the same and also contained 20% of sodium bicarbonate and 20% of zeolite in the same quantities. The control and experimental mineral mixtures were mixed into complete feed mixture (18% UP) in the amount of 1%. At the end of the investigation period, on the 30th day, there were taken samples of rumens contents for determining pH, and after that blood samples, in which, after the separation of blood serum, were determined glucose concentration, total proteins, albumin, globulin, urea, HDL cholesterol, LDL cholesterol, total bilirubin, calcium and phosphorus, as well as the activity of ALT and AST By computation there was calculated the ratio between albumin and globulin, ALT and AST, and the ratio between calcium and phosphorus. Daily allowance and milk chemical composition ( percentage of fat, proteins and dry substance) were determined at the end of the investigation period, that is on the 30th day of lactation, for each cow individually. Partial substitution of magnesium oxide with bentonite influenced milk production increase, but it was statistically insignificant. Besides that, in E group of cows, percentage of fat and dry substance in milk was significantly increased (p lt 0.05 and 0.01 respectively), while percentage of protein increase was insignificant. The substitution of magnesium oxide with bentonite had no impact on the values of examined parameters of metabolic profile, but it led to statistically significant increase of rumen contents pH values (p lt 0.05). From the obtained results it can be concluded that substitution of magnesium oxide with bentonite in feed mixtures that are used for feeding cows during summer period, can prevent rumen acidosis, which high yielding cows incline to under the conditions of elevated external temperatures. Besides that, this kind of substitution leads to improvement of milk composition, especially when percentage of fat and dry substance in milk is concerned.
AB  - Cilj ovog rada bio je da se ispita uticaj delimične supstitucije magnezijum oksida prirodnim bentonitom u krmnim smešama korišćenih u ishrani krava tokom njihove izloženosti toplotnom stresu. Ispitivanje je trajalo 30 dana i izvedeno je tokom poslednjih deset dana maja i prvih dvadeset dana juna kada je prosečna temperatura vazduha u staji bila 36,6 ± 2,5oC. U ogled je bilo uključeno 30 krava holštajn rase u prvoj fazi laktacije, koje su podeljene u dve grupe od po 15 krava: kontrolnu (K) i eksperimentalnu (E). K grupa je tokom celog ispitivanog perioda hranjena kontrolnom mineralnom smešom koja je sadržavala 60% magnezijum oksida. E grupa je bila hranjena oglednom mineralnom smešom koja je sadržavala 40% magnezijum oksida i 20% prirodnog bentonita. Preostali sastojci u kontrolnoj i oglednoj mineralnoj smeši bili su isti i u istim količinama i sadržavali su 20% natrijum bikarbonata i 20% zeolita. Kontrolna i ogledna mineralna smeša bile su umešane u potpunu krmnu smešu (18% UP) u iznosu od 1%. Na kraju oglednog perioda, 30. dana, uzeti su uzorci sadržaja buraga za određivanje pH a nakon toga i uzorci krvi u kojima su, nakon odvajanja krvnog seruma, određeni koncentracje glukoze, ukupnih proteina, albumina, globulina, uree, HDL-holesterola, LDL-holesterola, ukupnog bilirubina, kalcijuma i fosfora, kao i aktivnost ALT i AST. Računskim putem su obračunati odnosi albumina i globulina, ALT i AST, kao i odnos kalcijuma i fosfora. Dnevna količina i hemijski sastav mleka (procenat masti, proteina i suve materije) za svaku kravu pojedinačno određeni su na kraju ispitivanog perioda, odnosno 30. dana laktacije. Delimična supstitucija magnezijum oksida bentonitom je uticala na povećanje proizvodnje mleka ali ovaj porast nije bio statistički značajan. Pored toga kod E grupe krava procenat masti i suve materije u mleku bio je značajno povećan (p lt 0,05 odnosno 0,01), dok porast procenta proteina nije bio značajan. Zamena magnezijum oksida bentonitom nije uticala na vrednosti ispitivanih parametara metaboličkog profila ali je dovela do statistički značajnog povećanja pH vrednosti sadržaja buraga (p lt 0,05). Iz dobijenih rezultata se zaključuje da zamena magnezijum oksida bentonitom u krmnim smešama koje se koriste za ishranu krava tokom letnjeg perioda može preventivno da utiče na pojavu acidoze buraga kojoj su visokomlečne krave sklone u uslovima povišenih spoljašnjih temperatura. Pored toga, ovakva supstitucija dovodi do poboljšanja sastava mleka i to značajno u slučaju procenta masti i suve materije u mleku.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Veterinarski Glasnik
T1  - Effects of buffering mineral mixtures on milk yield, milk composition, rumen pH and some blood biochemical parameters in heat stressed dairy cows
T1  - Vlijanie mineral'noj smesi s bufernym dejstviem na nadoj moloka, sostav moloka, rN soderžanie rubca i koncentraciju nekotoryh biohemičeskih pokazatelej krovi u korov, podvergšihsja vozdejstviju teplovogo stressa
T1  - Uticaj mineralnih smeša sa pufernim dejstvom na mlečnost, sastav mleka, pH sadržaja buraga i koncentraciju pojedinih biohemijskih parametara krvi krava izloženih toplotnom stresu
VL  - 68
IS  - 1-2
SP  - 31
EP  - 42
DO  - 10.2298/VETGL1402031A
ER  - 

@article{
author = "Adamović, Milan and Šamanc, Horea and Kirovski, Danijela and Vujanac, Ivan and Valčić, Olivera",
year = "2014",
abstract = "The objective of the work was to investigate the influence of partial substitution of magnesium oxide with natural bentonite in feed mixtures used in feeding of cows during their exposure to heat stress. The investigation lasted 30 days and was carried out during last ten days of may and first twenty days of June when average air temperature in stables was 36.6±2.5oC. In the experiment there were included 30 cows of Holstein breed in first phase of lactation, which were divided into two groups of 15 cows: control (C) and experimental (E). Group C was fed with experimental mineral mixture that contained 60% of magnesium oxide during the whole investigation period. Group E was fed with experimental mineral mixture that contained 40% of magnesium oxide as well as 20% of natural bentonite. Remaining ingredients in both control and experimental mineral mixtures were the same and also contained 20% of sodium bicarbonate and 20% of zeolite in the same quantities. The control and experimental mineral mixtures were mixed into complete feed mixture (18% UP) in the amount of 1%. At the end of the investigation period, on the 30th day, there were taken samples of rumens contents for determining pH, and after that blood samples, in which, after the separation of blood serum, were determined glucose concentration, total proteins, albumin, globulin, urea, HDL cholesterol, LDL cholesterol, total bilirubin, calcium and phosphorus, as well as the activity of ALT and AST By computation there was calculated the ratio between albumin and globulin, ALT and AST, and the ratio between calcium and phosphorus. Daily allowance and milk chemical composition ( percentage of fat, proteins and dry substance) were determined at the end of the investigation period, that is on the 30th day of lactation, for each cow individually. Partial substitution of magnesium oxide with bentonite influenced milk production increase, but it was statistically insignificant. Besides that, in E group of cows, percentage of fat and dry substance in milk was significantly increased (p lt 0.05 and 0.01 respectively), while percentage of protein increase was insignificant. The substitution of magnesium oxide with bentonite had no impact on the values of examined parameters of metabolic profile, but it led to statistically significant increase of rumen contents pH values (p lt 0.05). From the obtained results it can be concluded that substitution of magnesium oxide with bentonite in feed mixtures that are used for feeding cows during summer period, can prevent rumen acidosis, which high yielding cows incline to under the conditions of elevated external temperatures. Besides that, this kind of substitution leads to improvement of milk composition, especially when percentage of fat and dry substance in milk is concerned., Cilj ovog rada bio je da se ispita uticaj delimične supstitucije magnezijum oksida prirodnim bentonitom u krmnim smešama korišćenih u ishrani krava tokom njihove izloženosti toplotnom stresu. Ispitivanje je trajalo 30 dana i izvedeno je tokom poslednjih deset dana maja i prvih dvadeset dana juna kada je prosečna temperatura vazduha u staji bila 36,6 ± 2,5oC. U ogled je bilo uključeno 30 krava holštajn rase u prvoj fazi laktacije, koje su podeljene u dve grupe od po 15 krava: kontrolnu (K) i eksperimentalnu (E). K grupa je tokom celog ispitivanog perioda hranjena kontrolnom mineralnom smešom koja je sadržavala 60% magnezijum oksida. E grupa je bila hranjena oglednom mineralnom smešom koja je sadržavala 40% magnezijum oksida i 20% prirodnog bentonita. Preostali sastojci u kontrolnoj i oglednoj mineralnoj smeši bili su isti i u istim količinama i sadržavali su 20% natrijum bikarbonata i 20% zeolita. Kontrolna i ogledna mineralna smeša bile su umešane u potpunu krmnu smešu (18% UP) u iznosu od 1%. Na kraju oglednog perioda, 30. dana, uzeti su uzorci sadržaja buraga za određivanje pH a nakon toga i uzorci krvi u kojima su, nakon odvajanja krvnog seruma, određeni koncentracje glukoze, ukupnih proteina, albumina, globulina, uree, HDL-holesterola, LDL-holesterola, ukupnog bilirubina, kalcijuma i fosfora, kao i aktivnost ALT i AST. Računskim putem su obračunati odnosi albumina i globulina, ALT i AST, kao i odnos kalcijuma i fosfora. Dnevna količina i hemijski sastav mleka (procenat masti, proteina i suve materije) za svaku kravu pojedinačno određeni su na kraju ispitivanog perioda, odnosno 30. dana laktacije. Delimična supstitucija magnezijum oksida bentonitom je uticala na povećanje proizvodnje mleka ali ovaj porast nije bio statistički značajan. Pored toga kod E grupe krava procenat masti i suve materije u mleku bio je značajno povećan (p lt 0,05 odnosno 0,01), dok porast procenta proteina nije bio značajan. Zamena magnezijum oksida bentonitom nije uticala na vrednosti ispitivanih parametara metaboličkog profila ali je dovela do statistički značajnog povećanja pH vrednosti sadržaja buraga (p lt 0,05). Iz dobijenih rezultata se zaključuje da zamena magnezijum oksida bentonitom u krmnim smešama koje se koriste za ishranu krava tokom letnjeg perioda može preventivno da utiče na pojavu acidoze buraga kojoj su visokomlečne krave sklone u uslovima povišenih spoljašnjih temperatura. Pored toga, ovakva supstitucija dovodi do poboljšanja sastava mleka i to značajno u slučaju procenta masti i suve materije u mleku.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Veterinarski Glasnik",
title = "Effects of buffering mineral mixtures on milk yield, milk composition, rumen pH and some blood biochemical parameters in heat stressed dairy cows, Vlijanie mineral'noj smesi s bufernym dejstviem na nadoj moloka, sostav moloka, rN soderžanie rubca i koncentraciju nekotoryh biohemičeskih pokazatelej krovi u korov, podvergšihsja vozdejstviju teplovogo stressa, Uticaj mineralnih smeša sa pufernim dejstvom na mlečnost, sastav mleka, pH sadržaja buraga i koncentraciju pojedinih biohemijskih parametara krvi krava izloženih toplotnom stresu",
volume = "68",
number = "1-2",
pages = "31-42",
doi = "10.2298/VETGL1402031A"
}

Adamović, M., Šamanc, H., Kirovski, D., Vujanac, I.,& Valčić, O.. (2014). Effects of buffering mineral mixtures on milk yield, milk composition, rumen pH and some blood biochemical parameters in heat stressed dairy cows. in Veterinarski Glasnik
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 68(1-2), 31-42.
https://doi.org/10.2298/VETGL1402031A

Adamović M, Šamanc H, Kirovski D, Vujanac I, Valčić O. Effects of buffering mineral mixtures on milk yield, milk composition, rumen pH and some blood biochemical parameters in heat stressed dairy cows. in Veterinarski Glasnik. 2014;68(1-2):31-42.
doi:10.2298/VETGL1402031A .

Adamović, Milan, Šamanc, Horea, Kirovski, Danijela, Vujanac, Ivan, Valčić, Olivera, "Effects of buffering mineral mixtures on milk yield, milk composition, rumen pH and some blood biochemical parameters in heat stressed dairy cows" in Veterinarski Glasnik, 68, no. 1-2 (2014):31-42,
https://doi.org/10.2298/VETGL1402031A . .

TY  - JOUR
AU  - Šamanc, Horea
AU  - Sladojević, Željko
AU  - Vujanac, Ivan
AU  - Prodanović, Radiša
PY  - 2014
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1157
AB  - The aim of this work was to investigate the change of metabolic profile of sows during the lactation period, taking into consideration both parity and number of piglets in a litter (litter size). In order to do this, 30 sows immediately after farrowing were taken and divided into three groups: sows with two farrowing (first group; n=10), ones with four farrowing (second group; n=10), and ones with five and more farrowing (third group; n=10). In regard to a litter size, 20 sows were divided into two groups: sows with eight piglets (first group; n=10), and sows with 10 and more piglets (second group; n=10). All the sows included in the experiment were mestizos of large Yorkshire and Swedish Landrace. Blood samples were taken on the 2nd and 28th day of lactation. In the blood serum samples there were de­termined the concentration of total proteins, albumins, Total bilirubin, calcium and inorganic phosphorus. The results have shown that there was not a significant difference in proteinemia between the groups on the 2nd day after farrowing, while on the 28th day of lactation, proteinemia was significantly lower only in the group with ten or more piglets in a litter. In all the groups, except for the group with ten or more piglets in the litter, proteinemia was significantly higher on the 28th compared to the 2nd day of lactation. Albumin concentration in blood serum of different groups of sows followed the same trend as protein concentration, with the only difference that albuminemia in sows with ten or more piglets in a litter was approximately the same on the 2nd and 28th day of lactation. Total bilirubin concentration in blood serum on the 2nd day after farrowing was equal in different groups of sows, provided that in sows with five or more farrowings it was significantly higher in regard to other groups. Similar divergence was also determined on the 28th day after farrowing. The sows of 4th parity had significantly lower and the ones with 10 or more farrowings higher bilirubinemia on the 28th compared to the 2nd day of lactation. Glycaemia was significantly lower in the sows with ten or more piglets in a litter in regard to other groups both on the 2nd and 28th day of lactation. Calcaemia was significantly lower on the 2nd in regard to the 28th day of lactation in all the groups, except for the group of sows with ten or more piglets in a litter. In the group with 10 or more piglets in a litter, calcaemia was significantly lower compared to other groups both on the 2nd and 28th day. The sows of 4. Parity had significantly lower phosphataemia in regard to other groups both on the 2nd and 28th day of lactation. Moreover, on the 28th day of lactation, the sows with 10 or more piglets in a litter had significantly lower phosphataemia in regard to all the other groups, except for the group of sows of 4th parity. Phosphataemia varied between the 2nd and 28th day of lactation in neither group except for the group of sows with 10 or more piglets in a litter. On the basis of the obtained results it can be concluded that between the 2nd and 28th day of lactation significant changes in concentrations of some parameters of metabolic profile in sows in lactation occur. The determined changes are most pronounced in elderly sows as well as in the ones with ten or more piglets in a litter, being a result of impeded bile flow or metabolic load due to the increased activity of mammary glands.
AB  - Cilj ovoga rada je bio da se ispita promena metaboličkog profila krmača tokom laktacionog perioda, a uzimajući u obzir paritet i broj prasadi u leglu. Za ispitivanje je odabrano 30 krmača neposredno nakon prašenja, koje su prema paritetu podeljene u tri grupe: krmače sa dva prašenja (prva grupa; n=10), sa četiri prašenja (druga grupa; n=10) i sa pet i više prašenja (treća grupa; n=10). U odnosu na broj prasadi u leglu 20 krmača je podeljeno u dve grupe: krmače sa osam i manje prasadi (prva grupa; n=10) i krmače sa 10 i više prasadi (druga grupa; n=10). Sve krmače uključene u ovaj ogled bile su melezi velikog jokšira i švedskog landrasa. Uzorci krvi su uzeti 2. i 28. dan laktacije. U uzorcima krvnog seruma određivana je koncentracija ukupnih proteina, albumina, ukupnog bilirubina, kalcijuma i neorganskog fosfora. Rezultati su pokazali da nije bilo značajne razlike u proteinemiji između grupa 2. dana posle prašenja, dok je 28. dana laktacije proteinemija bila značajno niža jedino kod grupe sa deset i više prasadi u leglu. Kod svih grupa, izuzev grupe sa deset i više prasadi u leglu, proteinemija je bila značajno veća 28. u odnosu na 2. dan laktacije. Koncentracija albumina u krvnom serumu različitih grupa krmača je pratila isti trend kao koncentracija proteina, sa jedinom razlikom što je albuminemija kod krmača sa deset i više prasadi u leglu bila približno ista 2. i 28. dana laktacije. Koncentracija ukupnog bilirubina u krvnom serumu je 2. dana posle prašenja bila približno jednaka kod različitih grupa krmača s tim da je kod krmača sa pet i više prašenja bila značajno veća u odnosu na ostale grupe. Slična razlika između grupa je utvrđena i 28. dana posle prašenja. Krmače 4. pariteta su imale značajno nižu a krmače sa 10 i više prašenje značajno višu bilirubinemiju 28. U odnosu na 2. dan laktacije. Glikemija je bila značajno niža kod krmača sa deset i više prasadi u leglu u odnosu na druge grupe kako 2. tako i 28. dana laktacije. Kalcemija je kod svih grupa, izuzev grupe krmača sa 10 i više prasadi u leglu, bila značajno niža 2. u odnosu na 28. dan. Kod grupe sa 10 i više prasadi u leglu kalcemija je bila značajno niža u odnosu na druge grupe kako 2. tako i 28. dana. Krmače 4. pariteta su imale značajno nižu fosfatemiju u odnosu na ostale grupe 2. i 28. dana lakatcije. Dodatno, 28. dana laktacije krmače sa 10 i više prasadi su imale značajno nižu fosfatemiju u odnosu na sve ostale grupe izuzev grupe krmača 4. pariteta. Fosfatemija se nije razlikovala između 2. i 28. dana laktacije niti kod jedne grupe izuzev kod grupe krmača sa 10 i više prasadi u leglu. Na osnovu dobijenih rezultata može se zaključiti da od 2. do 28. dana laktacije nastaju značajne promene u koncentraciji nekih parametara metaboličkog profila krmača u laktaciji. Ustanovljene promene su najizraženije kod starijih krmača i krmača sa deset i više prasadi u leglu kao rezultat otežanog oticanja žuči ili metaboličkog opterećenja usled pojačane aktivnosti mlečne žlezde.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Veterinarski Glasnik
T1  - Metabolic profile of sows at different parities and with different litter size
T1  - Metaboličeskij profil' svinomatok raznogo pariteta i količestva porosjat v pomete
T1  - Metabolički profil krmača različitog pariteta i broja prasadi u leglu
VL  - 68
IS  - 1-2
SP  - 77
EP  - 88
DO  - 10.2298/VETGL1402077S
ER  - 

@article{
author = "Šamanc, Horea and Sladojević, Željko and Vujanac, Ivan and Prodanović, Radiša",
year = "2014",
abstract = "The aim of this work was to investigate the change of metabolic profile of sows during the lactation period, taking into consideration both parity and number of piglets in a litter (litter size). In order to do this, 30 sows immediately after farrowing were taken and divided into three groups: sows with two farrowing (first group; n=10), ones with four farrowing (second group; n=10), and ones with five and more farrowing (third group; n=10). In regard to a litter size, 20 sows were divided into two groups: sows with eight piglets (first group; n=10), and sows with 10 and more piglets (second group; n=10). All the sows included in the experiment were mestizos of large Yorkshire and Swedish Landrace. Blood samples were taken on the 2nd and 28th day of lactation. In the blood serum samples there were de­termined the concentration of total proteins, albumins, Total bilirubin, calcium and inorganic phosphorus. The results have shown that there was not a significant difference in proteinemia between the groups on the 2nd day after farrowing, while on the 28th day of lactation, proteinemia was significantly lower only in the group with ten or more piglets in a litter. In all the groups, except for the group with ten or more piglets in the litter, proteinemia was significantly higher on the 28th compared to the 2nd day of lactation. Albumin concentration in blood serum of different groups of sows followed the same trend as protein concentration, with the only difference that albuminemia in sows with ten or more piglets in a litter was approximately the same on the 2nd and 28th day of lactation. Total bilirubin concentration in blood serum on the 2nd day after farrowing was equal in different groups of sows, provided that in sows with five or more farrowings it was significantly higher in regard to other groups. Similar divergence was also determined on the 28th day after farrowing. The sows of 4th parity had significantly lower and the ones with 10 or more farrowings higher bilirubinemia on the 28th compared to the 2nd day of lactation. Glycaemia was significantly lower in the sows with ten or more piglets in a litter in regard to other groups both on the 2nd and 28th day of lactation. Calcaemia was significantly lower on the 2nd in regard to the 28th day of lactation in all the groups, except for the group of sows with ten or more piglets in a litter. In the group with 10 or more piglets in a litter, calcaemia was significantly lower compared to other groups both on the 2nd and 28th day. The sows of 4. Parity had significantly lower phosphataemia in regard to other groups both on the 2nd and 28th day of lactation. Moreover, on the 28th day of lactation, the sows with 10 or more piglets in a litter had significantly lower phosphataemia in regard to all the other groups, except for the group of sows of 4th parity. Phosphataemia varied between the 2nd and 28th day of lactation in neither group except for the group of sows with 10 or more piglets in a litter. On the basis of the obtained results it can be concluded that between the 2nd and 28th day of lactation significant changes in concentrations of some parameters of metabolic profile in sows in lactation occur. The determined changes are most pronounced in elderly sows as well as in the ones with ten or more piglets in a litter, being a result of impeded bile flow or metabolic load due to the increased activity of mammary glands., Cilj ovoga rada je bio da se ispita promena metaboličkog profila krmača tokom laktacionog perioda, a uzimajući u obzir paritet i broj prasadi u leglu. Za ispitivanje je odabrano 30 krmača neposredno nakon prašenja, koje su prema paritetu podeljene u tri grupe: krmače sa dva prašenja (prva grupa; n=10), sa četiri prašenja (druga grupa; n=10) i sa pet i više prašenja (treća grupa; n=10). U odnosu na broj prasadi u leglu 20 krmača je podeljeno u dve grupe: krmače sa osam i manje prasadi (prva grupa; n=10) i krmače sa 10 i više prasadi (druga grupa; n=10). Sve krmače uključene u ovaj ogled bile su melezi velikog jokšira i švedskog landrasa. Uzorci krvi su uzeti 2. i 28. dan laktacije. U uzorcima krvnog seruma određivana je koncentracija ukupnih proteina, albumina, ukupnog bilirubina, kalcijuma i neorganskog fosfora. Rezultati su pokazali da nije bilo značajne razlike u proteinemiji između grupa 2. dana posle prašenja, dok je 28. dana laktacije proteinemija bila značajno niža jedino kod grupe sa deset i više prasadi u leglu. Kod svih grupa, izuzev grupe sa deset i više prasadi u leglu, proteinemija je bila značajno veća 28. u odnosu na 2. dan laktacije. Koncentracija albumina u krvnom serumu različitih grupa krmača je pratila isti trend kao koncentracija proteina, sa jedinom razlikom što je albuminemija kod krmača sa deset i više prasadi u leglu bila približno ista 2. i 28. dana laktacije. Koncentracija ukupnog bilirubina u krvnom serumu je 2. dana posle prašenja bila približno jednaka kod različitih grupa krmača s tim da je kod krmača sa pet i više prašenja bila značajno veća u odnosu na ostale grupe. Slična razlika između grupa je utvrđena i 28. dana posle prašenja. Krmače 4. pariteta su imale značajno nižu a krmače sa 10 i više prašenje značajno višu bilirubinemiju 28. U odnosu na 2. dan laktacije. Glikemija je bila značajno niža kod krmača sa deset i više prasadi u leglu u odnosu na druge grupe kako 2. tako i 28. dana laktacije. Kalcemija je kod svih grupa, izuzev grupe krmača sa 10 i više prasadi u leglu, bila značajno niža 2. u odnosu na 28. dan. Kod grupe sa 10 i više prasadi u leglu kalcemija je bila značajno niža u odnosu na druge grupe kako 2. tako i 28. dana. Krmače 4. pariteta su imale značajno nižu fosfatemiju u odnosu na ostale grupe 2. i 28. dana lakatcije. Dodatno, 28. dana laktacije krmače sa 10 i više prasadi su imale značajno nižu fosfatemiju u odnosu na sve ostale grupe izuzev grupe krmača 4. pariteta. Fosfatemija se nije razlikovala između 2. i 28. dana laktacije niti kod jedne grupe izuzev kod grupe krmača sa 10 i više prasadi u leglu. Na osnovu dobijenih rezultata može se zaključiti da od 2. do 28. dana laktacije nastaju značajne promene u koncentraciji nekih parametara metaboličkog profila krmača u laktaciji. Ustanovljene promene su najizraženije kod starijih krmača i krmača sa deset i više prasadi u leglu kao rezultat otežanog oticanja žuči ili metaboličkog opterećenja usled pojačane aktivnosti mlečne žlezde.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Veterinarski Glasnik",
title = "Metabolic profile of sows at different parities and with different litter size, Metaboličeskij profil' svinomatok raznogo pariteta i količestva porosjat v pomete, Metabolički profil krmača različitog pariteta i broja prasadi u leglu",
volume = "68",
number = "1-2",
pages = "77-88",
doi = "10.2298/VETGL1402077S"
}

Šamanc, H., Sladojević, Ž., Vujanac, I.,& Prodanović, R.. (2014). Metabolic profile of sows at different parities and with different litter size. in Veterinarski Glasnik
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 68(1-2), 77-88.
https://doi.org/10.2298/VETGL1402077S

Šamanc H, Sladojević Ž, Vujanac I, Prodanović R. Metabolic profile of sows at different parities and with different litter size. in Veterinarski Glasnik. 2014;68(1-2):77-88.
doi:10.2298/VETGL1402077S .

Šamanc, Horea, Sladojević, Željko, Vujanac, Ivan, Prodanović, Radiša, "Metabolic profile of sows at different parities and with different litter size" in Veterinarski Glasnik, 68, no. 1-2 (2014):77-88,
https://doi.org/10.2298/VETGL1402077S . .

TY  - JOUR
AU  - Horvat, Jože
AU  - Šamanc, Horea
AU  - Kirovski, Danijela
AU  - Vujanac, Ivan
PY  - 2014
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1126
AB  - It is considered that high air temperature and humidity during the summer are the main factors which adversely affect both the health and production-reproductive performance of high yielding dairy cows. The resulting heath stress leads to a series of changes in endocrine regulation of homeostasis. The changes in hormonal status reflect in some way to the indicators of metabolic status of the cows. The objective of this work was to investigate the influence of heat stress on metabolic status of cows. The experiment was carried out on 20 cows of Holstein-Friesian breed during the summer, in the period from 18th to 45th day of lactation. During the performance of the experiment, the value of heat index (THI) was determined hourly and then the value of average morning (from 10 pm the previous day to 9 am the current day), afternoon (from 10 am to 9 pm the current day) and all-day THI was calculated. Blood sampling was carried out on the 1st, 2nd, 8th, 11th, 14th, 18th, 25th, 29th and 37th day of the experiment, in the morning and the afternoon. On the basis of hourly THI values, whole experimental period was divided into three periods: period A during which the cows were exposed to a extreme high heat stress (THI≥78) at least 7 hours in 24 hours; period B during which the cows were exposed to a moderate heat stress (72≥THI≤78) at least 7 hours in 24 hours; period C during which the cows were not exposed to a heat stress (THI≤72) in 24 hours. The average daily THI in period A (73,25±0,89) was significantly higher (p lt 0,01, individually) in regard to period B (71,45±0,96) and period C (65,41±2,09). THI was significantly higher in the period B than in the period C (p lt 0,01). Significantly lower blood glucose value (p lt 0,05) during the afternoon period in the cows exposed to the extreme heat stress (3,02±0,31 mmol/L) in regard to the morning period (3,14±0,41 mmol/L) points to the fact that in such conditions, metabolism redirects to use of glucose as an energy source because in that way less thermal energy is produced than during decomposition of fatty acids. Concentration of most important metabolic profile parameters in blood (cholesterol, triglycerides, total proteins, albumin, urea, total bilirubin, calcium, inorganic phosphorus as well as AST and ALT activity) did not vary significantly under the influence of heat stress. The exception was ionic calcium concentration which, under the conditions of extreme heat stress, was on the lower limit of physiological values (1.17±0.16 mmol/L).
AB  - Danas se smatra da visoka spoljna temperatura i povišena vlažnost vazduha u toku leta predstavljaju glavne činioce koji nepovoljno utiču na zdravlje i proizvodno-reproduktivne sposobnosti visokomlečnih krava. Nastali toplotni stres dovodi do niza promena u endokrinoj regulaciji homeostaze. Promene u hormonalnom statusu preslikavaju se na neki način i na pokazatelje metaboličkog statusa krava. Cilj ovog rada bio je da se ispita uticaj toplotnog stresa na metabolički status krava. Ogled je izveden na 20 krava Holštajn-frizijske rase tokom letnjeg perioda u periodu od 18. do 45. dana laktacije. Tokom perioda izvođenja ogleda određivana je vrednost 'satnih' toplotnih indeksa (THI) a zatim izračunata vrednost prosečnih jutarnjih (od 22h prethodnog, do 9h tekućeg dana), popodnevnih (od 10h do 21h tekućeg dana) i celodnevnih THI. Uzorkovanje krvi je izvršeno 1., 2., 8., 11., 14., 18., 25., 29. i 37. dana ogleda, u jutarnjem i popodnevnom periodu. Na osnovu vrednosti satnih THI ceo ogledni period je podeljen na tri perioda: period A u kome su krave bile izložene izrazitom toplotnom stresu (THI≥78) najmanje 7 sati u toku 24h; period B u kome su krave bile izložene umerenom toplotnom stresu (72≥THI≤78) najmanje 7 sati u toku 24 sata; period C u kome krave nisu bile izložene toplotnom stresu (THI≤72) u toku 24 sata. Prosečni dnevni THI u periodu A (73,25±0,89) bio je značajno veći (p lt 0,01, pojedinačno) u odnosu na period B (71,45±0,96) i period C (65,41±2,09). THI u periodu B bio je značajno viši nego u periodu C (p lt 0,01). Značajno niža vrednost glukoze (p lt 0,05) u popodnevnom periodu kod krava izloženih izrazitom toplotnom stresu (3,02±0,31 mmol/L) u odnosu na jutarnji period (3,14±0,41 mmol/L), ukazuje da se u takvim uslovima metabolizam preusmerava na korišćenje glukoze kao izvora energije jer se pri tome stvara manje toplotne energije nego pri razlaganju masnih kiselina.Koncentracija najvažnijih parametara metaboličkog profila u krvi (holesterola, triglicerida, ukupnih proteina, albumina, uree, ukupnog bilirubina, kalcijuma, anorganskog fosfora kao i aktivnost AST i ALT) nije značajno varirala pod uticajem toplotnog stresa. Izuzetak je koncentracija jonskog kalcijuma koja je u uslovima izrazitog toplotnog stresa bila na samoj donjoj granici fiziološke vrednosti (1,17±0,16 mmol/L).
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Veterinarski Glasnik
T1  - The influence of heat stress on metabolic status of cows
T1  - Vlijanie teplovogo stressa na metaboličeskij status korov
T1  - Uticaj toplotnog stresa na metabolički status krava
VL  - 68
IS  - 3-4
SP  - 141
EP  - 150
DO  - 10.2298/VETGL1404141H
ER  - 

@article{
author = "Horvat, Jože and Šamanc, Horea and Kirovski, Danijela and Vujanac, Ivan",
year = "2014",
abstract = "It is considered that high air temperature and humidity during the summer are the main factors which adversely affect both the health and production-reproductive performance of high yielding dairy cows. The resulting heath stress leads to a series of changes in endocrine regulation of homeostasis. The changes in hormonal status reflect in some way to the indicators of metabolic status of the cows. The objective of this work was to investigate the influence of heat stress on metabolic status of cows. The experiment was carried out on 20 cows of Holstein-Friesian breed during the summer, in the period from 18th to 45th day of lactation. During the performance of the experiment, the value of heat index (THI) was determined hourly and then the value of average morning (from 10 pm the previous day to 9 am the current day), afternoon (from 10 am to 9 pm the current day) and all-day THI was calculated. Blood sampling was carried out on the 1st, 2nd, 8th, 11th, 14th, 18th, 25th, 29th and 37th day of the experiment, in the morning and the afternoon. On the basis of hourly THI values, whole experimental period was divided into three periods: period A during which the cows were exposed to a extreme high heat stress (THI≥78) at least 7 hours in 24 hours; period B during which the cows were exposed to a moderate heat stress (72≥THI≤78) at least 7 hours in 24 hours; period C during which the cows were not exposed to a heat stress (THI≤72) in 24 hours. The average daily THI in period A (73,25±0,89) was significantly higher (p lt 0,01, individually) in regard to period B (71,45±0,96) and period C (65,41±2,09). THI was significantly higher in the period B than in the period C (p lt 0,01). Significantly lower blood glucose value (p lt 0,05) during the afternoon period in the cows exposed to the extreme heat stress (3,02±0,31 mmol/L) in regard to the morning period (3,14±0,41 mmol/L) points to the fact that in such conditions, metabolism redirects to use of glucose as an energy source because in that way less thermal energy is produced than during decomposition of fatty acids. Concentration of most important metabolic profile parameters in blood (cholesterol, triglycerides, total proteins, albumin, urea, total bilirubin, calcium, inorganic phosphorus as well as AST and ALT activity) did not vary significantly under the influence of heat stress. The exception was ionic calcium concentration which, under the conditions of extreme heat stress, was on the lower limit of physiological values (1.17±0.16 mmol/L)., Danas se smatra da visoka spoljna temperatura i povišena vlažnost vazduha u toku leta predstavljaju glavne činioce koji nepovoljno utiču na zdravlje i proizvodno-reproduktivne sposobnosti visokomlečnih krava. Nastali toplotni stres dovodi do niza promena u endokrinoj regulaciji homeostaze. Promene u hormonalnom statusu preslikavaju se na neki način i na pokazatelje metaboličkog statusa krava. Cilj ovog rada bio je da se ispita uticaj toplotnog stresa na metabolički status krava. Ogled je izveden na 20 krava Holštajn-frizijske rase tokom letnjeg perioda u periodu od 18. do 45. dana laktacije. Tokom perioda izvođenja ogleda određivana je vrednost 'satnih' toplotnih indeksa (THI) a zatim izračunata vrednost prosečnih jutarnjih (od 22h prethodnog, do 9h tekućeg dana), popodnevnih (od 10h do 21h tekućeg dana) i celodnevnih THI. Uzorkovanje krvi je izvršeno 1., 2., 8., 11., 14., 18., 25., 29. i 37. dana ogleda, u jutarnjem i popodnevnom periodu. Na osnovu vrednosti satnih THI ceo ogledni period je podeljen na tri perioda: period A u kome su krave bile izložene izrazitom toplotnom stresu (THI≥78) najmanje 7 sati u toku 24h; period B u kome su krave bile izložene umerenom toplotnom stresu (72≥THI≤78) najmanje 7 sati u toku 24 sata; period C u kome krave nisu bile izložene toplotnom stresu (THI≤72) u toku 24 sata. Prosečni dnevni THI u periodu A (73,25±0,89) bio je značajno veći (p lt 0,01, pojedinačno) u odnosu na period B (71,45±0,96) i period C (65,41±2,09). THI u periodu B bio je značajno viši nego u periodu C (p lt 0,01). Značajno niža vrednost glukoze (p lt 0,05) u popodnevnom periodu kod krava izloženih izrazitom toplotnom stresu (3,02±0,31 mmol/L) u odnosu na jutarnji period (3,14±0,41 mmol/L), ukazuje da se u takvim uslovima metabolizam preusmerava na korišćenje glukoze kao izvora energije jer se pri tome stvara manje toplotne energije nego pri razlaganju masnih kiselina.Koncentracija najvažnijih parametara metaboličkog profila u krvi (holesterola, triglicerida, ukupnih proteina, albumina, uree, ukupnog bilirubina, kalcijuma, anorganskog fosfora kao i aktivnost AST i ALT) nije značajno varirala pod uticajem toplotnog stresa. Izuzetak je koncentracija jonskog kalcijuma koja je u uslovima izrazitog toplotnog stresa bila na samoj donjoj granici fiziološke vrednosti (1,17±0,16 mmol/L).",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Veterinarski Glasnik",
title = "The influence of heat stress on metabolic status of cows, Vlijanie teplovogo stressa na metaboličeskij status korov, Uticaj toplotnog stresa na metabolički status krava",
volume = "68",
number = "3-4",
pages = "141-150",
doi = "10.2298/VETGL1404141H"
}

Horvat, J., Šamanc, H., Kirovski, D.,& Vujanac, I.. (2014). The influence of heat stress on metabolic status of cows. in Veterinarski Glasnik
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 68(3-4), 141-150.
https://doi.org/10.2298/VETGL1404141H

Horvat J, Šamanc H, Kirovski D, Vujanac I. The influence of heat stress on metabolic status of cows. in Veterinarski Glasnik. 2014;68(3-4):141-150.
doi:10.2298/VETGL1404141H .

Horvat, Jože, Šamanc, Horea, Kirovski, Danijela, Vujanac, Ivan, "The influence of heat stress on metabolic status of cows" in Veterinarski Glasnik, 68, no. 3-4 (2014):141-150,
https://doi.org/10.2298/VETGL1404141H . .

TY  - JOUR
AU  - Šamanc, Horea
AU  - Kirovski, Danijela
AU  - Lakić, Nada
AU  - Celeska, Irena
AU  - Bojkovic-Kovacević, Slavica
AU  - Sladojević, Željko
AU  - Ivanov, Ivan
PY  - 2014
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1105
AB  - The aim of this study was to compare the concentrations of blood variables obtained simultaneously from the jugular and mammary veins of dairy cows. Eighty Holstein cows were divided into four equal groups: dry, low- (LY), medium- (MY) and high-yielding (HY). Blood insulin, glucose, non-esterified fatty acid (NEFA), beta-hydroxybutyrate (BHBA) and urea concentrations were measured. The jugular and mammary vein (J/M) ratio between concentrations of each variable was calculated. Differences between the groups of cows in concentrations of variables in the jugular vein were not in accordance with those obtained for the mammary vein. J/M values for insulin and glucose concentrations were above 1.0 in all groups of cows. The ratios for NEFA and BHBA concentrations were under or equal to 1.0 in dry and LY cows but above 1.0 in the MY and HY groups, indicating that in MY and HY cows those metabolites are apparently utilised by the mammary gland. J/M values for urea were above 1.0 in dry and LY cows but less than 1.0 in groups MY and HY, indicating that in the latter case urea is apparently released by the mammary gland. In conclusion, J/M for NEFA, BHBA and urea may be useful for estimation of the critical point when the mammary gland receives insufficient energy precursors for its current activity.
PB  - Akademiai Kiado Rt, Budapest
T2  - Acta Veterinaria Hungarica
T1  - A comparison of the concentrations of energy-balance-related variables in jugular and mammary vein blood of dairy cows with different milk yield
VL  - 62
IS  - 1
SP  - 52
EP  - 63
DO  - 10.1556/AVet.2013.055
ER  - 

@article{
author = "Šamanc, Horea and Kirovski, Danijela and Lakić, Nada and Celeska, Irena and Bojkovic-Kovacević, Slavica and Sladojević, Željko and Ivanov, Ivan",
year = "2014",
abstract = "The aim of this study was to compare the concentrations of blood variables obtained simultaneously from the jugular and mammary veins of dairy cows. Eighty Holstein cows were divided into four equal groups: dry, low- (LY), medium- (MY) and high-yielding (HY). Blood insulin, glucose, non-esterified fatty acid (NEFA), beta-hydroxybutyrate (BHBA) and urea concentrations were measured. The jugular and mammary vein (J/M) ratio between concentrations of each variable was calculated. Differences between the groups of cows in concentrations of variables in the jugular vein were not in accordance with those obtained for the mammary vein. J/M values for insulin and glucose concentrations were above 1.0 in all groups of cows. The ratios for NEFA and BHBA concentrations were under or equal to 1.0 in dry and LY cows but above 1.0 in the MY and HY groups, indicating that in MY and HY cows those metabolites are apparently utilised by the mammary gland. J/M values for urea were above 1.0 in dry and LY cows but less than 1.0 in groups MY and HY, indicating that in the latter case urea is apparently released by the mammary gland. In conclusion, J/M for NEFA, BHBA and urea may be useful for estimation of the critical point when the mammary gland receives insufficient energy precursors for its current activity.",
publisher = "Akademiai Kiado Rt, Budapest",
journal = "Acta Veterinaria Hungarica",
title = "A comparison of the concentrations of energy-balance-related variables in jugular and mammary vein blood of dairy cows with different milk yield",
volume = "62",
number = "1",
pages = "52-63",
doi = "10.1556/AVet.2013.055"
}

Šamanc, H., Kirovski, D., Lakić, N., Celeska, I., Bojkovic-Kovacević, S., Sladojević, Ž.,& Ivanov, I.. (2014). A comparison of the concentrations of energy-balance-related variables in jugular and mammary vein blood of dairy cows with different milk yield. in Acta Veterinaria Hungarica
Akademiai Kiado Rt, Budapest., 62(1), 52-63.
https://doi.org/10.1556/AVet.2013.055

Šamanc H, Kirovski D, Lakić N, Celeska I, Bojkovic-Kovacević S, Sladojević Ž, Ivanov I. A comparison of the concentrations of energy-balance-related variables in jugular and mammary vein blood of dairy cows with different milk yield. in Acta Veterinaria Hungarica. 2014;62(1):52-63.
doi:10.1556/AVet.2013.055 .

Šamanc, Horea, Kirovski, Danijela, Lakić, Nada, Celeska, Irena, Bojkovic-Kovacević, Slavica, Sladojević, Željko, Ivanov, Ivan, "A comparison of the concentrations of energy-balance-related variables in jugular and mammary vein blood of dairy cows with different milk yield" in Acta Veterinaria Hungarica, 62, no. 1 (2014):52-63,
https://doi.org/10.1556/AVet.2013.055 . .

TY  - JOUR
AU  - Đoković, Radojica
AU  - Šamanc, Horea
AU  - Jovanović, Milijan
AU  - Fratrić, Natalija
AU  - Dosković, Vladimir
AU  - Stanimirović, Zoran
PY  - 2013
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1046
AB  - Background: Production diseases, such as those associated with improper nutrition or management are common in transitional high-yielding dairy cows. The diseases listed in this include: the fat liver syndrome, ketosis, oxidative stress, laminitis, mastitis, milk fever, retained placenta, metritis and infertility. The diseases occur mainly around calving. They are all interrelated and form the so-called periparturient disease complex. The term transition is to underscore the important physiological, metabolic, nutritional and endocrine changes occurring in this time frame. Diagnosing liver lipidosis and susceptibility of ketosis in dairy cows may include liver biopsy or ecography, but a less invasive and more economical analytical method may be the measurement of blood biochemical metabolites. The objective of the present study was to determine a relationship among blood indicators of hepatic function and lipid content in the liver during transitional period in high-yielding dairy cows. Materials, Methods & Results: Late pregnant and calved cows (n = 40) were selected from a Holstein dairy herd and allocated to four groups: a late pregnant cows (n = 10) from day 15 to day 5 before calving; late pregnant cows (n = 10) from day 4 to day 1 before calving; clinically puerperal healthy cows (n = 10) and clinically ketotic puerperal cows (n = 10). Liver and blood samples were taken from all cows. The blood metabolites concentrations were determined by photometric methods using a Cobas Mira automatic analyzer. Liver specimens were histopathologically analyzed for lipid contents using a freezing microtome. The statistical analysis of the obtained data was carried out by ANOVA-procedure. The results of present investigation have shown that the lipid content in the liver and the blood non-esterificed fatty acids, beta-hydroxybutyrate, total bilirubin concentrations and the AST activities were significantly higher (P < 0.05) as well the blood glucose, total cholesterol, triglycerides and albumin concentrations were significantly lower (P < 0.05) in puerperal ketotic cows as compared to the values of these parameters in the blood of healthy cows in the transition period. Discussion: Liver biopsy is the only reliable method to determine severity of fatty liver in dairy cattle in the transitional period. Blood, urine and milk metabolites or blood enzyme activity have been proposed as diagnostic tools. This investigation demonstrated that in healthy transitional cows a mild fatty infiltration occurred in liver during the late pregnancy and early lactation. The histopathological examination showed a moderate to severe degree of fatty liver in ketotic cows. The lipomobilisation markers, serum BHB and NEFA concentrations, were markedly enhanced in puerperal ketotic cows. However, liver steatosis compromised hepatocyte metabolism, leading to significantly weaker circulating concentrations of glucose, TG and total cholesterol, and induced some cellular lesions as evidenced by significant increases in the serum bilirubin concentrations and in the AST enzyme activities in puerperal ketotic cows All these biochemical metabolites may be used as important biochemical indicators in the determination of the functional status of the liver in high-yielding dairy cows during the transition period.
PB  - Univ Fed Rio Grande Do Sul, Porto Alegre Rs
T2  - Acta Scientiae Veterinariae
T1  - Relationship among Blood Indicators of Hepatic Function and Lipid Content in the Liver during Transitional Period in High-Yielding Dairy Cows
VL  - 41
SP  - 1128
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_1046
ER  - 

@article{
author = "Đoković, Radojica and Šamanc, Horea and Jovanović, Milijan and Fratrić, Natalija and Dosković, Vladimir and Stanimirović, Zoran",
year = "2013",
abstract = "Background: Production diseases, such as those associated with improper nutrition or management are common in transitional high-yielding dairy cows. The diseases listed in this include: the fat liver syndrome, ketosis, oxidative stress, laminitis, mastitis, milk fever, retained placenta, metritis and infertility. The diseases occur mainly around calving. They are all interrelated and form the so-called periparturient disease complex. The term transition is to underscore the important physiological, metabolic, nutritional and endocrine changes occurring in this time frame. Diagnosing liver lipidosis and susceptibility of ketosis in dairy cows may include liver biopsy or ecography, but a less invasive and more economical analytical method may be the measurement of blood biochemical metabolites. The objective of the present study was to determine a relationship among blood indicators of hepatic function and lipid content in the liver during transitional period in high-yielding dairy cows. Materials, Methods & Results: Late pregnant and calved cows (n = 40) were selected from a Holstein dairy herd and allocated to four groups: a late pregnant cows (n = 10) from day 15 to day 5 before calving; late pregnant cows (n = 10) from day 4 to day 1 before calving; clinically puerperal healthy cows (n = 10) and clinically ketotic puerperal cows (n = 10). Liver and blood samples were taken from all cows. The blood metabolites concentrations were determined by photometric methods using a Cobas Mira automatic analyzer. Liver specimens were histopathologically analyzed for lipid contents using a freezing microtome. The statistical analysis of the obtained data was carried out by ANOVA-procedure. The results of present investigation have shown that the lipid content in the liver and the blood non-esterificed fatty acids, beta-hydroxybutyrate, total bilirubin concentrations and the AST activities were significantly higher (P < 0.05) as well the blood glucose, total cholesterol, triglycerides and albumin concentrations were significantly lower (P < 0.05) in puerperal ketotic cows as compared to the values of these parameters in the blood of healthy cows in the transition period. Discussion: Liver biopsy is the only reliable method to determine severity of fatty liver in dairy cattle in the transitional period. Blood, urine and milk metabolites or blood enzyme activity have been proposed as diagnostic tools. This investigation demonstrated that in healthy transitional cows a mild fatty infiltration occurred in liver during the late pregnancy and early lactation. The histopathological examination showed a moderate to severe degree of fatty liver in ketotic cows. The lipomobilisation markers, serum BHB and NEFA concentrations, were markedly enhanced in puerperal ketotic cows. However, liver steatosis compromised hepatocyte metabolism, leading to significantly weaker circulating concentrations of glucose, TG and total cholesterol, and induced some cellular lesions as evidenced by significant increases in the serum bilirubin concentrations and in the AST enzyme activities in puerperal ketotic cows All these biochemical metabolites may be used as important biochemical indicators in the determination of the functional status of the liver in high-yielding dairy cows during the transition period.",
publisher = "Univ Fed Rio Grande Do Sul, Porto Alegre Rs",
journal = "Acta Scientiae Veterinariae",
title = "Relationship among Blood Indicators of Hepatic Function and Lipid Content in the Liver during Transitional Period in High-Yielding Dairy Cows",
volume = "41",
pages = "1128",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_1046"
}

Đoković, R., Šamanc, H., Jovanović, M., Fratrić, N., Dosković, V.,& Stanimirović, Z.. (2013). Relationship among Blood Indicators of Hepatic Function and Lipid Content in the Liver during Transitional Period in High-Yielding Dairy Cows. in Acta Scientiae Veterinariae
Univ Fed Rio Grande Do Sul, Porto Alegre Rs., 41, 1128.
https://hdl.handle.net/21.15107/rcub_veterinar_1046

Đoković R, Šamanc H, Jovanović M, Fratrić N, Dosković V, Stanimirović Z. Relationship among Blood Indicators of Hepatic Function and Lipid Content in the Liver during Transitional Period in High-Yielding Dairy Cows. in Acta Scientiae Veterinariae. 2013;41:1128.
https://hdl.handle.net/21.15107/rcub_veterinar_1046 .

Đoković, Radojica, Šamanc, Horea, Jovanović, Milijan, Fratrić, Natalija, Dosković, Vladimir, Stanimirović, Zoran, "Relationship among Blood Indicators of Hepatic Function and Lipid Content in the Liver during Transitional Period in High-Yielding Dairy Cows" in Acta Scientiae Veterinariae, 41 (2013):1128,
https://hdl.handle.net/21.15107/rcub_veterinar_1046 .

TY  - JOUR
AU  - Prodanović, Radiša
AU  - Šamanc, Horea
AU  - Kirovski, Danijela
AU  - Vujanac, Ivan
AU  - Sladojević, Željko
PY  - 2013
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2109
AB  - Циљ рада био је да се утврди повезаност биохемијских параметара крви и
стереотипног понашања крава. Испитивање је извршено на 80 Холштајн крава
подељених у четири групе: засушење, пуерперијум, рана и касна лактацијa.
Процена стереотипног понашања (игра језика) извршена је посматрањем живо-
тиња 2–4 часа након јутарњег храњења. У узорцима крви одређиване су концен-
трације најважнијих биохемијских параметара крви. Поремећаји у виду „игре
језика“ су установљени код три од 20 животиња из пуерпералне групе крава
када су установљене и значајно ниже вредности гликемије, протеинемије, уре-
мије и магнезијемије у односу на антепарталне вредности. Концентрације били-
рубина су у том периоду биле изнад, а укупних протеина и магнезијума испод
физиолошких вредности. Резултати указују на вероватну повезаност испити-
ваног стереотипног понашања и биохемијског састава крви.
AB  - The objective of this study was to determine the relationship between
stereotyped behavior and selected biochemical parameters in dairy cows. A total of
80 Holstein cows were randomly assigned into one of 4 groups: dry, puerperal,
early and late lactating. Evaluation of stereotypes (tongue rolling) was performed
by observation of animals 2 to 4 hours after morning feeding. Blood samples were taken and analyzed for main biochemical parameters. Tongue rolling was
established in 3 of 20 puerperal cows. Puerperal cows had significantly lower
values for glicemia, proteinemia, uremia and magnesiemia compared to antepartal
cows. Total protein and Mg were below, whereas total bilirubin was above
physiological ranges. These results support the possibility to link blood changes to
the occurrence of changed behaviour.
PB  - Banja Luka : PI Veterinary Institute Republic of Srpska „Dr. Vaso Butozan“
T2  - Veterinarski žurnal Republike Srpske
T1  - Neki aspekti etiopatogeneze poremećaja u ponašanju krava u farmskim uslovima držanja
T1  - Some aspects of the etiopathogenesis of behaviour problems among cows in intesive housing conditions
VL  - 13
IS  - 2
SP  - 221
EP  - 228
DO  - 10.7251/VJRS1302221P
ER  - 

@article{
author = "Prodanović, Radiša and Šamanc, Horea and Kirovski, Danijela and Vujanac, Ivan and Sladojević, Željko",
year = "2013",
abstract = "Циљ рада био је да се утврди повезаност биохемијских параметара крви и
стереотипног понашања крава. Испитивање је извршено на 80 Холштајн крава
подељених у четири групе: засушење, пуерперијум, рана и касна лактацијa.
Процена стереотипног понашања (игра језика) извршена је посматрањем живо-
тиња 2–4 часа након јутарњег храњења. У узорцима крви одређиване су концен-
трације најважнијих биохемијских параметара крви. Поремећаји у виду „игре
језика“ су установљени код три од 20 животиња из пуерпералне групе крава
када су установљене и значајно ниже вредности гликемије, протеинемије, уре-
мије и магнезијемије у односу на антепарталне вредности. Концентрације били-
рубина су у том периоду биле изнад, а укупних протеина и магнезијума испод
физиолошких вредности. Резултати указују на вероватну повезаност испити-
ваног стереотипног понашања и биохемијског састава крви., The objective of this study was to determine the relationship between
stereotyped behavior and selected biochemical parameters in dairy cows. A total of
80 Holstein cows were randomly assigned into one of 4 groups: dry, puerperal,
early and late lactating. Evaluation of stereotypes (tongue rolling) was performed
by observation of animals 2 to 4 hours after morning feeding. Blood samples were taken and analyzed for main biochemical parameters. Tongue rolling was
established in 3 of 20 puerperal cows. Puerperal cows had significantly lower
values for glicemia, proteinemia, uremia and magnesiemia compared to antepartal
cows. Total protein and Mg were below, whereas total bilirubin was above
physiological ranges. These results support the possibility to link blood changes to
the occurrence of changed behaviour.",
publisher = "Banja Luka : PI Veterinary Institute Republic of Srpska „Dr. Vaso Butozan“",
journal = "Veterinarski žurnal Republike Srpske",
title = "Neki aspekti etiopatogeneze poremećaja u ponašanju krava u farmskim uslovima držanja, Some aspects of the etiopathogenesis of behaviour problems among cows in intesive housing conditions",
volume = "13",
number = "2",
pages = "221-228",
doi = "10.7251/VJRS1302221P"
}

Prodanović, R., Šamanc, H., Kirovski, D., Vujanac, I.,& Sladojević, Ž.. (2013). Neki aspekti etiopatogeneze poremećaja u ponašanju krava u farmskim uslovima držanja. in Veterinarski žurnal Republike Srpske
Banja Luka : PI Veterinary Institute Republic of Srpska „Dr. Vaso Butozan“., 13(2), 221-228.
https://doi.org/10.7251/VJRS1302221P

Prodanović R, Šamanc H, Kirovski D, Vujanac I, Sladojević Ž. Neki aspekti etiopatogeneze poremećaja u ponašanju krava u farmskim uslovima držanja. in Veterinarski žurnal Republike Srpske. 2013;13(2):221-228.
doi:10.7251/VJRS1302221P .

Prodanović, Radiša, Šamanc, Horea, Kirovski, Danijela, Vujanac, Ivan, Sladojević, Željko, "Neki aspekti etiopatogeneze poremećaja u ponašanju krava u farmskim uslovima držanja" in Veterinarski žurnal Republike Srpske, 13, no. 2 (2013):221-228,
https://doi.org/10.7251/VJRS1302221P . .

TY  - JOUR
AU  - Sladojević, Željko
AU  - Kirovski, Danijela
AU  - Šamanc, Horea
PY  - 2013
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2108
AB  - Циљ рада је био да се утврди утицај енергетског додатка на бази глицерола
на тjелесну кондицију крава. Петнаест дана прије тељења одабрано је 80 крава
подијељених у двије групе од по 40 крава: контролну и огледну. Кравама
огледне групе је у посљедње двије недјеље засушења и до 60. дана лактације
додаван у храну енергетски додатак на бази глицерола. Оцјена тјелесне
кондиције (ОТК) одређена је 15 дана прије, као и 7, 30 и 60 дана послије
тељења. Краве огледне групе су имале значајно вишу вриједност ОТК у односу
на контролну групу само 7. дана лактације. Разлика у ОТК између периода
засушења и пуерперијума је била у оквиру физиолошки дозвољеног опсега
вриједности код огледне групе, док је код контролне групе била виша од
дозвољеног, указујући да је код огледних крава постпартални негативан биланс
енергије био слабије изражен.
AB  - The objective of the investigation presented in this study was to establish the
effects of a glycerol-based energy supplement in the diet of high-yield dairy cows
on their body condition. Eighty cows were selected 2 weeks before calving, and
they were divided into two groups with 40 cows: control and experimental. Cows of the experimental group orally received glycerol based energy supplement during
the final two weeks of the dry period until the day 60 of lactation. Body condition
scoring (BCS) was done 15 days before and 7, 30 and 60 days after calving.
Experimental cows had significantly higher BCS only on day 7 after calving
compared to control group. Difference in BCS between dry and puerperal period
was within physiological value in experimental but higher than physiologically
accepted in control group, indicating that negative energy balance in experimental
cows was not so pronounced.
PB  - Banja Luka : PI Veterinary Institute Republic of Srpska „Dr. Vaso Butozan“
T2  - Veterinarski žurnal Republike Srpske
T1  - Uticaj energetskog dodatka na bazi glicerola na tjelesnu kondiciju visokomliječnih krava
T1  - Effect of glycerol based energy supplementation on body condition score of dairy cows
VL  - 13
IS  - 2
SP  - 211
EP  - 220
DO  - 10.7251/VJRS1302211S
ER  - 

@article{
author = "Sladojević, Željko and Kirovski, Danijela and Šamanc, Horea",
year = "2013",
abstract = "Циљ рада је био да се утврди утицај енергетског додатка на бази глицерола
на тjелесну кондицију крава. Петнаест дана прије тељења одабрано је 80 крава
подијељених у двије групе од по 40 крава: контролну и огледну. Кравама
огледне групе је у посљедње двије недјеље засушења и до 60. дана лактације
додаван у храну енергетски додатак на бази глицерола. Оцјена тјелесне
кондиције (ОТК) одређена је 15 дана прије, као и 7, 30 и 60 дана послије
тељења. Краве огледне групе су имале значајно вишу вриједност ОТК у односу
на контролну групу само 7. дана лактације. Разлика у ОТК између периода
засушења и пуерперијума је била у оквиру физиолошки дозвољеног опсега
вриједности код огледне групе, док је код контролне групе била виша од
дозвољеног, указујући да је код огледних крава постпартални негативан биланс
енергије био слабије изражен., The objective of the investigation presented in this study was to establish the
effects of a glycerol-based energy supplement in the diet of high-yield dairy cows
on their body condition. Eighty cows were selected 2 weeks before calving, and
they were divided into two groups with 40 cows: control and experimental. Cows of the experimental group orally received glycerol based energy supplement during
the final two weeks of the dry period until the day 60 of lactation. Body condition
scoring (BCS) was done 15 days before and 7, 30 and 60 days after calving.
Experimental cows had significantly higher BCS only on day 7 after calving
compared to control group. Difference in BCS between dry and puerperal period
was within physiological value in experimental but higher than physiologically
accepted in control group, indicating that negative energy balance in experimental
cows was not so pronounced.",
publisher = "Banja Luka : PI Veterinary Institute Republic of Srpska „Dr. Vaso Butozan“",
journal = "Veterinarski žurnal Republike Srpske",
title = "Uticaj energetskog dodatka na bazi glicerola na tjelesnu kondiciju visokomliječnih krava, Effect of glycerol based energy supplementation on body condition score of dairy cows",
volume = "13",
number = "2",
pages = "211-220",
doi = "10.7251/VJRS1302211S"
}

Sladojević, Ž., Kirovski, D.,& Šamanc, H.. (2013). Uticaj energetskog dodatka na bazi glicerola na tjelesnu kondiciju visokomliječnih krava. in Veterinarski žurnal Republike Srpske
Banja Luka : PI Veterinary Institute Republic of Srpska „Dr. Vaso Butozan“., 13(2), 211-220.
https://doi.org/10.7251/VJRS1302211S

Sladojević Ž, Kirovski D, Šamanc H. Uticaj energetskog dodatka na bazi glicerola na tjelesnu kondiciju visokomliječnih krava. in Veterinarski žurnal Republike Srpske. 2013;13(2):211-220.
doi:10.7251/VJRS1302211S .

Sladojević, Željko, Kirovski, Danijela, Šamanc, Horea, "Uticaj energetskog dodatka na bazi glicerola na tjelesnu kondiciju visokomliječnih krava" in Veterinarski žurnal Republike Srpske, 13, no. 2 (2013):211-220,
https://doi.org/10.7251/VJRS1302211S . .

TY  - JOUR
AU  - Kirovski, Danijela
AU  - Šamanc, Horea
AU  - Sladojević, Željko
AU  - Prodanović, Radiša
AU  - Vujanac, Ivan
PY  - 2013
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2100
AB  - За испитивање је узорковано млеко добијено од сто крава 30. дана лактације
током јутарње и вечерње муже. Анализом резултата установљено је да су краве
биле у стању негативног биланса енергије. Није било значајне разлике у концентрацији масти и протеина између јутарње и вечерње муже, али је концентрација урее била значајно виша током јутарње муже, указујући да су јединке
током ноћи гладовале односно да је распон између вечерњег и јутарњег храњења био значајно дужи. Због тога, протеини хране нису могли да буду искоришћени за синтезу високовредних протеина, већ су се њихови производи разлагања конвертовали у уреу, која се излучивала путем млека.
AB  - Investigation was done using morning and evening milk samples from 100 cows
that were 30 days in lactation. Obtained results showed that all cows were in state
on negative energy balance. There was no significant difference between morning
and evening milk samples in fat and protein concentrations, but urea concentration
was significantly higher in morning compared to evening milk samples,
indicating that cows were exposed to over-night starvation, meaning that period between evening and morning feeding were to long. Therefore, dietary proteins
were not used for synthesis of animal proteins but were converted to urea that was
excreted by milk.
PB  - Banja Luka : PI Veterinary Institute Republic of Srpska „Dr. Vaso Butozan“
T2  - Veterinarski žurnal Republike Srpske
T1  - Nutritivni status visokomlečnih krava: procena na osnovu sastava mleka
T1  - Nutritional status of dairy cows: estimation based on milk composition
VL  - 13
IS  - 2
SP  - 109
EP  - 116
DO  - 10.7251/VJRS1302109K
ER  - 

@article{
author = "Kirovski, Danijela and Šamanc, Horea and Sladojević, Željko and Prodanović, Radiša and Vujanac, Ivan",
year = "2013",
abstract = "За испитивање је узорковано млеко добијено од сто крава 30. дана лактације
током јутарње и вечерње муже. Анализом резултата установљено је да су краве
биле у стању негативног биланса енергије. Није било значајне разлике у концентрацији масти и протеина између јутарње и вечерње муже, али је концентрација урее била значајно виша током јутарње муже, указујући да су јединке
током ноћи гладовале односно да је распон између вечерњег и јутарњег храњења био значајно дужи. Због тога, протеини хране нису могли да буду искоришћени за синтезу високовредних протеина, већ су се њихови производи разлагања конвертовали у уреу, која се излучивала путем млека., Investigation was done using morning and evening milk samples from 100 cows
that were 30 days in lactation. Obtained results showed that all cows were in state
on negative energy balance. There was no significant difference between morning
and evening milk samples in fat and protein concentrations, but urea concentration
was significantly higher in morning compared to evening milk samples,
indicating that cows were exposed to over-night starvation, meaning that period between evening and morning feeding were to long. Therefore, dietary proteins
were not used for synthesis of animal proteins but were converted to urea that was
excreted by milk.",
publisher = "Banja Luka : PI Veterinary Institute Republic of Srpska „Dr. Vaso Butozan“",
journal = "Veterinarski žurnal Republike Srpske",
title = "Nutritivni status visokomlečnih krava: procena na osnovu sastava mleka, Nutritional status of dairy cows: estimation based on milk composition",
volume = "13",
number = "2",
pages = "109-116",
doi = "10.7251/VJRS1302109K"
}

Kirovski, D., Šamanc, H., Sladojević, Ž., Prodanović, R.,& Vujanac, I.. (2013). Nutritivni status visokomlečnih krava: procena na osnovu sastava mleka. in Veterinarski žurnal Republike Srpske
Banja Luka : PI Veterinary Institute Republic of Srpska „Dr. Vaso Butozan“., 13(2), 109-116.
https://doi.org/10.7251/VJRS1302109K

Kirovski D, Šamanc H, Sladojević Ž, Prodanović R, Vujanac I. Nutritivni status visokomlečnih krava: procena na osnovu sastava mleka. in Veterinarski žurnal Republike Srpske. 2013;13(2):109-116.
doi:10.7251/VJRS1302109K .

Kirovski, Danijela, Šamanc, Horea, Sladojević, Željko, Prodanović, Radiša, Vujanac, Ivan, "Nutritivni status visokomlečnih krava: procena na osnovu sastava mleka" in Veterinarski žurnal Republike Srpske, 13, no. 2 (2013):109-116,
https://doi.org/10.7251/VJRS1302109K . .

TY  - JOUR
AU  - Adamović, Milan
AU  - Šamanc, Horea
AU  - Kirovski, Danijela
AU  - Valčić, Olivera
AU  - Vujanac, Ivan
PY  - 2013
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1064
AB  - This paper presents the results of investigations on the effects of a mineral mixture with a buffering properties, on the quantity and composition of milk, pH value of cow's rumen contents, number and motility of microorganisms. The study was conducted from June to November on two groups cows; the control-C (129) and experimental-E (119). The cows were in linked system of keeping. Groups were formed according to 'couple' system (two cows with similar characteristics) after 7-10 days calving and alloted to one of two stables. The given meals were identical with the difference that in the complete feed mixture in group E a mineral mixture with buffering properties was added in the quantity of 1%. The mixture was produced at the Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia. The mixture composition is based on natural bentonite, natural zeolite, magnesium oxide and sodium bicarbonate, The milk yield during the hottest summer months (June - August) in group E was higher by 1.99 kg or 8.16% (p lt 0.05). During the period (September - November) the milk yield in this group was also higher, but insufficiently to make the difference (0.38kg or 1.53%) between the C and E group (p>0.05). The differences in the content and yield of milk fat and protein, (% and kg) were insignificantly higher for group E during both investigation periods. The pH value of the rumen content was higher in group E and was within the optimal physiological limits. Before the morning meal the values for group K and E were 6.25 ; 6.79 (p>0.05), respectively. After the morning meal the corresponding rumen pH values were 6.01 ; 6.92 (p lt 0.05).The number and motility of the infusoria present in the rumen of group E cows was increased. That the studied mineral mixture with buffering properties has a positive effect on the pH stability and development of the microorganisms present in the rumen under conditions of heat stress. This contributes to the arousal of favorite conditions for food digestion and utilization and hence to higher milk production and increased fat and protein content.
PB  - Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd
T2  - Ecologica
T1  - Effect mineral mixture with a buffering properties on production and quality milk of cows in heat stress conditions
VL  - 20
IS  - 71
SP  - 483
EP  - 487
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_1064
ER  - 

@article{
author = "Adamović, Milan and Šamanc, Horea and Kirovski, Danijela and Valčić, Olivera and Vujanac, Ivan",
year = "2013",
abstract = "This paper presents the results of investigations on the effects of a mineral mixture with a buffering properties, on the quantity and composition of milk, pH value of cow's rumen contents, number and motility of microorganisms. The study was conducted from June to November on two groups cows; the control-C (129) and experimental-E (119). The cows were in linked system of keeping. Groups were formed according to 'couple' system (two cows with similar characteristics) after 7-10 days calving and alloted to one of two stables. The given meals were identical with the difference that in the complete feed mixture in group E a mineral mixture with buffering properties was added in the quantity of 1%. The mixture was produced at the Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia. The mixture composition is based on natural bentonite, natural zeolite, magnesium oxide and sodium bicarbonate, The milk yield during the hottest summer months (June - August) in group E was higher by 1.99 kg or 8.16% (p lt 0.05). During the period (September - November) the milk yield in this group was also higher, but insufficiently to make the difference (0.38kg or 1.53%) between the C and E group (p>0.05). The differences in the content and yield of milk fat and protein, (% and kg) were insignificantly higher for group E during both investigation periods. The pH value of the rumen content was higher in group E and was within the optimal physiological limits. Before the morning meal the values for group K and E were 6.25 ; 6.79 (p>0.05), respectively. After the morning meal the corresponding rumen pH values were 6.01 ; 6.92 (p lt 0.05).The number and motility of the infusoria present in the rumen of group E cows was increased. That the studied mineral mixture with buffering properties has a positive effect on the pH stability and development of the microorganisms present in the rumen under conditions of heat stress. This contributes to the arousal of favorite conditions for food digestion and utilization and hence to higher milk production and increased fat and protein content.",
publisher = "Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd",
journal = "Ecologica",
title = "Effect mineral mixture with a buffering properties on production and quality milk of cows in heat stress conditions",
volume = "20",
number = "71",
pages = "483-487",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_1064"
}

Adamović, M., Šamanc, H., Kirovski, D., Valčić, O.,& Vujanac, I.. (2013). Effect mineral mixture with a buffering properties on production and quality milk of cows in heat stress conditions. in Ecologica
Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd., 20(71), 483-487.
https://hdl.handle.net/21.15107/rcub_veterinar_1064

Adamović M, Šamanc H, Kirovski D, Valčić O, Vujanac I. Effect mineral mixture with a buffering properties on production and quality milk of cows in heat stress conditions. in Ecologica. 2013;20(71):483-487.
https://hdl.handle.net/21.15107/rcub_veterinar_1064 .

Adamović, Milan, Šamanc, Horea, Kirovski, Danijela, Valčić, Olivera, Vujanac, Ivan, "Effect mineral mixture with a buffering properties on production and quality milk of cows in heat stress conditions" in Ecologica, 20, no. 71 (2013):483-487,
https://hdl.handle.net/21.15107/rcub_veterinar_1064 .

TY  - JOUR
AU  - Jovičin, Milovan
AU  - Dražić, Mirko
AU  - Petrujkić, Branko
AU  - Mirilović, Milorad
AU  - Šamanc, Horea
AU  - Jeremić, Ivan
PY  - 2013
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/979
AB  - The goal of our paper was to investigate how the rumen infusoria ecosystem stability, determined by infusoria color index by Lugol solution staining affects reproduction parameters of Holstein-Friesian cows. The results point out that infusoria system stability has vice versa influence on open days and insemination index. The decrease of infusoria color leads to longer service period and negatively affects fertility. Accumulation of energy and nutrients in infusoria affects insemination index since we observed the decrease of insemination index to be in the correlation with infusoria coloring index increase. Infusoria coloring index by Lugol stain can be used for rapid determination of rumen ecosystem. Future investigations should determine the correlation between rumen infusoria chemical composition and reproductive parameters in dairy cows.
AB  - Zadatak našeg rada je bio da se prouči kako stabilnost ekosistema infuzorija u buragu krava, određena pomoću indeksa obojenosti infuzorija Lugolovim rastvorom joda, utiče na reproduktivne pokazatelje kod holštajn-frizijskih krava. Rezultati ukazuju da stabilnost sitema infuzorija određena preko jodnog indeksa obojenosti Lugolovim rastvorom ima recipročan uticaj na servis period i indeks osemenjavanja. Smanjenje indeksa obojenosti infuzorija dovodi do produženja servis perioda, a time i negativno utiče na plodnost. Snabdevenost infuzorija energijom i hranljivim materijama utiče na indeks osemenjavanja, jer je smanjenje indeksa osemenjavanja u korelaciji sa povećanjem indeks prebojenosti infuzorija. Indeks obojenosti infuzorija Lugolovim rastvorom se može koristiti za brzo određivanje stanja ekosistema buraga. Naredna istraživanja bi trebalo da ustanove povezanost hemijskog sastava infuzorija buraga i reproduktivnih pokazatelja visoko mlečnih krava.
PB  - Institut PKB Agroekonomik, Padinska skela
T2  - Zbornik naučnih radova Instituta PKB Agroekonomik
T1  - Relationship between the rumen infusoria color index and fertility indicators in Holstein Friesian cows
T1  - Odnos indeksa boje infuzorija iz buraga i pokazatelja plodnosti kod krava Holštajn frizijske rase
VL  - 19
IS  - 3-4
SP  - 103
EP  - 114
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_979
ER  - 

@article{
author = "Jovičin, Milovan and Dražić, Mirko and Petrujkić, Branko and Mirilović, Milorad and Šamanc, Horea and Jeremić, Ivan",
year = "2013",
abstract = "The goal of our paper was to investigate how the rumen infusoria ecosystem stability, determined by infusoria color index by Lugol solution staining affects reproduction parameters of Holstein-Friesian cows. The results point out that infusoria system stability has vice versa influence on open days and insemination index. The decrease of infusoria color leads to longer service period and negatively affects fertility. Accumulation of energy and nutrients in infusoria affects insemination index since we observed the decrease of insemination index to be in the correlation with infusoria coloring index increase. Infusoria coloring index by Lugol stain can be used for rapid determination of rumen ecosystem. Future investigations should determine the correlation between rumen infusoria chemical composition and reproductive parameters in dairy cows., Zadatak našeg rada je bio da se prouči kako stabilnost ekosistema infuzorija u buragu krava, određena pomoću indeksa obojenosti infuzorija Lugolovim rastvorom joda, utiče na reproduktivne pokazatelje kod holštajn-frizijskih krava. Rezultati ukazuju da stabilnost sitema infuzorija određena preko jodnog indeksa obojenosti Lugolovim rastvorom ima recipročan uticaj na servis period i indeks osemenjavanja. Smanjenje indeksa obojenosti infuzorija dovodi do produženja servis perioda, a time i negativno utiče na plodnost. Snabdevenost infuzorija energijom i hranljivim materijama utiče na indeks osemenjavanja, jer je smanjenje indeksa osemenjavanja u korelaciji sa povećanjem indeks prebojenosti infuzorija. Indeks obojenosti infuzorija Lugolovim rastvorom se može koristiti za brzo određivanje stanja ekosistema buraga. Naredna istraživanja bi trebalo da ustanove povezanost hemijskog sastava infuzorija buraga i reproduktivnih pokazatelja visoko mlečnih krava.",
publisher = "Institut PKB Agroekonomik, Padinska skela",
journal = "Zbornik naučnih radova Instituta PKB Agroekonomik",
title = "Relationship between the rumen infusoria color index and fertility indicators in Holstein Friesian cows, Odnos indeksa boje infuzorija iz buraga i pokazatelja plodnosti kod krava Holštajn frizijske rase",
volume = "19",
number = "3-4",
pages = "103-114",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_979"
}

Jovičin, M., Dražić, M., Petrujkić, B., Mirilović, M., Šamanc, H.,& Jeremić, I.. (2013). Relationship between the rumen infusoria color index and fertility indicators in Holstein Friesian cows. in Zbornik naučnih radova Instituta PKB Agroekonomik
Institut PKB Agroekonomik, Padinska skela., 19(3-4), 103-114.
https://hdl.handle.net/21.15107/rcub_veterinar_979

Jovičin M, Dražić M, Petrujkić B, Mirilović M, Šamanc H, Jeremić I. Relationship between the rumen infusoria color index and fertility indicators in Holstein Friesian cows. in Zbornik naučnih radova Instituta PKB Agroekonomik. 2013;19(3-4):103-114.
https://hdl.handle.net/21.15107/rcub_veterinar_979 .

Jovičin, Milovan, Dražić, Mirko, Petrujkić, Branko, Mirilović, Milorad, Šamanc, Horea, Jeremić, Ivan, "Relationship between the rumen infusoria color index and fertility indicators in Holstein Friesian cows" in Zbornik naučnih radova Instituta PKB Agroekonomik, 19, no. 3-4 (2013):103-114,
https://hdl.handle.net/21.15107/rcub_veterinar_979 .

TY  - JOUR
AU  - Kočiš, J.
AU  - Ilić, Tamara
AU  - Šamanc, Horea
AU  - Dimitrijević, Sanda
PY  - 2013
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/996
AB  - Because of indirect and direct damages, parasitic infections of cattle pose a threat to animals, so it is necessary to suppress them continuously. In order to carry out the action successfully, it is of crucial importance to deal with current data on their presence. The investigation was carried out in the region of North Bačka District during 2009. and 2010., in 224 heads of cattle grown at farms of various hygienic status and housing conditions. In this study, there are presented the results relating to helminthosis and mange prevalence in different age categories of cattle. Positive parasitological findings were determined in 43.30% of tested animals. There were diagnosed cestodes of Moniezia and Dicrocoelium dendriticum strain, gastro intestinal strongilides as well as mites of Psoroptes strain. During two years' investigation, there was found out the greatest prevalence of infections caused by gastro intestinal strongilides (19.78% and 29.32%). On the basis of the obtained results, it will be possible to use modern antihelmintics more effectively, as well as to implement measures in order to prevent both growth and survival of preparasitic stadiums in the environment and animal infection. The ultimate goal is to help providing more economical cattle production in the investigated region.
AB  - Zbog indirektnih i direktnih šteta parazitske infekcije goveda predstavljaju opasnost za životinje i potrebno ih je kontinuirano suzbijati, a da bi se taj proces uspešno sproveo neophodno je imati na raspolaganju realne podatke o njihovoj zastupljenosti. Istraživanje je sprovedeno na području Severnobačkog okruga, tokom 2009. i 2010. godine, kod 224 govečeta, uzgajana na farmama različitog higijenskog statusa i u različitim uslovima držanja. U radu su prikazani rezultati koji se odnose na prevalenciju helmintoza i šuge kod različitih starosnih kategorija goveda. Pozitivan parazitološki nalaz je ustanovljen kod 43,30% pregledanih životinja. Dijagnostikovane su cestode iz roda Moniezia, Dicrocoelium dendriticum, želudačno-crevne strongilide i šugarci roda Psoroptes. Tokom obe godine istraživanja ustanovljena je najveća prevalencija infekcije želudačno-crevnim strongilidama (19,78% i 29,32%). Na osnovu dobijenih rezultata biće omogućena efikasnija primena modernih antihelmintika, sprovođenje mera u cilju sprečavanja razvoja i preživljavanja preparazitskih stadijuma u spoljašnjoj sredini i sprečavanje infekcije životinja, a sve sa ciljem da se obezbedi ekonomičnija govedarska proizvodnja u ispitivanom području.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Veterinarski Glasnik
T1  - Parasitic infections in cattle in North-Bačka District
T1  - Parazitske infekcije goveda Severnobačkog okruga
VL  - 67
IS  - 5-6
SP  - 405
EP  - 416
DO  - 10.2298/VETGL1306405K
ER  - 

@article{
author = "Kočiš, J. and Ilić, Tamara and Šamanc, Horea and Dimitrijević, Sanda",
year = "2013",
abstract = "Because of indirect and direct damages, parasitic infections of cattle pose a threat to animals, so it is necessary to suppress them continuously. In order to carry out the action successfully, it is of crucial importance to deal with current data on their presence. The investigation was carried out in the region of North Bačka District during 2009. and 2010., in 224 heads of cattle grown at farms of various hygienic status and housing conditions. In this study, there are presented the results relating to helminthosis and mange prevalence in different age categories of cattle. Positive parasitological findings were determined in 43.30% of tested animals. There were diagnosed cestodes of Moniezia and Dicrocoelium dendriticum strain, gastro intestinal strongilides as well as mites of Psoroptes strain. During two years' investigation, there was found out the greatest prevalence of infections caused by gastro intestinal strongilides (19.78% and 29.32%). On the basis of the obtained results, it will be possible to use modern antihelmintics more effectively, as well as to implement measures in order to prevent both growth and survival of preparasitic stadiums in the environment and animal infection. The ultimate goal is to help providing more economical cattle production in the investigated region., Zbog indirektnih i direktnih šteta parazitske infekcije goveda predstavljaju opasnost za životinje i potrebno ih je kontinuirano suzbijati, a da bi se taj proces uspešno sproveo neophodno je imati na raspolaganju realne podatke o njihovoj zastupljenosti. Istraživanje je sprovedeno na području Severnobačkog okruga, tokom 2009. i 2010. godine, kod 224 govečeta, uzgajana na farmama različitog higijenskog statusa i u različitim uslovima držanja. U radu su prikazani rezultati koji se odnose na prevalenciju helmintoza i šuge kod različitih starosnih kategorija goveda. Pozitivan parazitološki nalaz je ustanovljen kod 43,30% pregledanih životinja. Dijagnostikovane su cestode iz roda Moniezia, Dicrocoelium dendriticum, želudačno-crevne strongilide i šugarci roda Psoroptes. Tokom obe godine istraživanja ustanovljena je najveća prevalencija infekcije želudačno-crevnim strongilidama (19,78% i 29,32%). Na osnovu dobijenih rezultata biće omogućena efikasnija primena modernih antihelmintika, sprovođenje mera u cilju sprečavanja razvoja i preživljavanja preparazitskih stadijuma u spoljašnjoj sredini i sprečavanje infekcije životinja, a sve sa ciljem da se obezbedi ekonomičnija govedarska proizvodnja u ispitivanom području.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Veterinarski Glasnik",
title = "Parasitic infections in cattle in North-Bačka District, Parazitske infekcije goveda Severnobačkog okruga",
volume = "67",
number = "5-6",
pages = "405-416",
doi = "10.2298/VETGL1306405K"
}

Kočiš, J., Ilić, T., Šamanc, H.,& Dimitrijević, S.. (2013). Parasitic infections in cattle in North-Bačka District. in Veterinarski Glasnik
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 67(5-6), 405-416.
https://doi.org/10.2298/VETGL1306405K

Kočiš J, Ilić T, Šamanc H, Dimitrijević S. Parasitic infections in cattle in North-Bačka District. in Veterinarski Glasnik. 2013;67(5-6):405-416.
doi:10.2298/VETGL1306405K .

Kočiš, J., Ilić, Tamara, Šamanc, Horea, Dimitrijević, Sanda, "Parasitic infections in cattle in North-Bačka District" in Veterinarski Glasnik, 67, no. 5-6 (2013):405-416,
https://doi.org/10.2298/VETGL1306405K . .

TY  - JOUR
AU  - Šamanc, Horea
AU  - Sladojević, Željko
AU  - Vujanac, Ivan
AU  - Prodanović, Radiša
AU  - Kirovski, M.
AU  - Dodovski, Petar
AU  - Kirovski, Danijela
PY  - 2013
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1073
AB  - Piglets that nurse anterior mammary glands grow faster than those suckling posterior mammary glands. The underlying mechanisms are not known. The purpose of this study was to investigate if there is a difference in composition in colostrum and milk secreted by anterior and posterior mammary glands. Seven healthy sows were used. The first three pairs of mammary glands were defined as anterior mammary glands (AMG) and the rest as posterior mammary glands (PMG). Additionally, the total of 87 born piglets from 7 litters derived from the sows involved in the experiment was analyzed. Piglets from each litter that nursed AMG were defined as AMG group while the rest of piglets from the litter were defined as PMG group. Colostrum and milk were collected at days 1, 2, 3 and 7 after parturition. Samples taken from anterior and posterior mammary glands were pooled, respectively. Results showed that total protein, IGF-I and insulin concentrations were significantly higher in the colostrum of anterior than posterior glands and IGF-I concentration remained significantly higher in milk of anterior compared to posterior glands. There were no significant differences in fat, dry matter and lactose among anterior and posterior glands during all examined periods. Additionally, blood samples from nursing sows were obtained at days 1 and 7 after parturition. Results showed that concentrations of Ca, glucose, total protein, albumin, globulin, total bilirubin and insulin significantly increased from day 1 to day 7 of parturition while concentrations of P, BUN, CK and IGF-I did not significantly change during this period. Initial body weight of pigs nursing the anterior gland was higher but not significantly that those suckling posterior glands. Pigs that nursed anterior glands gained weight faster then those which suckled posterior glands resulting with significantly higher body weigh of piglets nursing anterior compared to posterior glands at day 8 of neonatal life (p  lt  0.05). Therefore, it may be concluded that the priority of anterior glands milk secretion in total protein and grow stimulating factors may have an impact on increased body weight gain of nursing pigs.
AB  - Prasad koja sisaju prednje mamarne komplekse rastu brže nego ona koja sisaju zadnje. Mehanizmi koji objašnjavaju ovu pojavu nisu sasvim poznati. Cilj ovog rada bio je da se ispita da li postoji razlika u sastavu kolostruma i mleka stvorenim u prednjim odnosno zadnjim mamarnim kompleksima. Sedam zdravih krmača je bilo uključeno u ogled. Prva tri para mamarnih kompleksa su definisana kao prednji (PMK), a ostali kao zadnji mamarni kompleksi (ZMK). Dodatno, ispitano je 87 prasadi iz 7 legala poreklom od krmača uključenih u ogled. Prasad iz legla koja su sisala PMK su pripala PMK grupi dok su prasad koja su sisala preostale mamarne komplekse grupisana u ZMK grupu. Kolostrum i mleko su uzorkovani 1., 2., 3. i 7. dana nakon prašenja. Uzorci uzeti iz prednjih odnosno zadnjih mamarnih kompleksa su zatim spojeni. Rezultati su ukazali da su koncentracije ukupnih proteina, IGF-I i insulina bile značajno više u kolostrumu PMK u odnosu na ZMK a koncentracija IGF-I je ostala značajno viša u mleku PMK u odnosu na ZMK. Nije bilo značajne razlike u koncentraciji masti, suvoj materiji i laktozi između sekreta PMK i ZMK tokom celog ispitivanog perioda. Dodatno, uzimani su uzorci krvi od krmača 1. i 7. dana posle prašenja. Rezultati su ukazali da su koncentracije Ca, glukoze, ukupnih proteina, albumina, globulina, ukupnog bilirubina i insulina značajno porasle od 1. do 7. dana nakon prašenja dok se koncentracija P, uree, kreatin kinaze i IGF-I nije značajno menjala tokom ovog perioda. Početna telesna masa prasadi koja su sisala PMK je bila viša, ali ne značajno, u odnosu na onu koju je sisalo ZMK. Posle toga, prasad koja su sisala PMK su imala veći dnevni telesni prirast nego ona koja su sisala ZMK što je rezultiralo da su 8. dana neonatalnog života prasad koja su sisala PMK imala značajno veću telesnu masu u odnosu na onu koja su sisala ZMK. Na osnovu svega navedenog se može zaključiti da kvalitetniji sastav sekreta PMK u pogledu sadržaja proteina i faktora rasta može da ima uticaj na veći telesni prirast prasadi koja sisaju ove komplekse u odnosu na prasad koja sisaju ZMK.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Acta Veterinaria-Beograd
T1  - Relationship between growth of nursing pigs and composition of sow colostrum and milk from anterior and posterior mammary glands
T1  - Zavisnost rasta novorođene prasadi od sastava kolostruma i mleka prednjih odnosno zadnjih mamarnih kompleksa krmača
VL  - 63
IS  - 5-6
SP  - 537
EP  - 548
DO  - 10.2298/AVB1306537S
ER  - 

@article{
author = "Šamanc, Horea and Sladojević, Željko and Vujanac, Ivan and Prodanović, Radiša and Kirovski, M. and Dodovski, Petar and Kirovski, Danijela",
year = "2013",
abstract = "Piglets that nurse anterior mammary glands grow faster than those suckling posterior mammary glands. The underlying mechanisms are not known. The purpose of this study was to investigate if there is a difference in composition in colostrum and milk secreted by anterior and posterior mammary glands. Seven healthy sows were used. The first three pairs of mammary glands were defined as anterior mammary glands (AMG) and the rest as posterior mammary glands (PMG). Additionally, the total of 87 born piglets from 7 litters derived from the sows involved in the experiment was analyzed. Piglets from each litter that nursed AMG were defined as AMG group while the rest of piglets from the litter were defined as PMG group. Colostrum and milk were collected at days 1, 2, 3 and 7 after parturition. Samples taken from anterior and posterior mammary glands were pooled, respectively. Results showed that total protein, IGF-I and insulin concentrations were significantly higher in the colostrum of anterior than posterior glands and IGF-I concentration remained significantly higher in milk of anterior compared to posterior glands. There were no significant differences in fat, dry matter and lactose among anterior and posterior glands during all examined periods. Additionally, blood samples from nursing sows were obtained at days 1 and 7 after parturition. Results showed that concentrations of Ca, glucose, total protein, albumin, globulin, total bilirubin and insulin significantly increased from day 1 to day 7 of parturition while concentrations of P, BUN, CK and IGF-I did not significantly change during this period. Initial body weight of pigs nursing the anterior gland was higher but not significantly that those suckling posterior glands. Pigs that nursed anterior glands gained weight faster then those which suckled posterior glands resulting with significantly higher body weigh of piglets nursing anterior compared to posterior glands at day 8 of neonatal life (p  lt  0.05). Therefore, it may be concluded that the priority of anterior glands milk secretion in total protein and grow stimulating factors may have an impact on increased body weight gain of nursing pigs., Prasad koja sisaju prednje mamarne komplekse rastu brže nego ona koja sisaju zadnje. Mehanizmi koji objašnjavaju ovu pojavu nisu sasvim poznati. Cilj ovog rada bio je da se ispita da li postoji razlika u sastavu kolostruma i mleka stvorenim u prednjim odnosno zadnjim mamarnim kompleksima. Sedam zdravih krmača je bilo uključeno u ogled. Prva tri para mamarnih kompleksa su definisana kao prednji (PMK), a ostali kao zadnji mamarni kompleksi (ZMK). Dodatno, ispitano je 87 prasadi iz 7 legala poreklom od krmača uključenih u ogled. Prasad iz legla koja su sisala PMK su pripala PMK grupi dok su prasad koja su sisala preostale mamarne komplekse grupisana u ZMK grupu. Kolostrum i mleko su uzorkovani 1., 2., 3. i 7. dana nakon prašenja. Uzorci uzeti iz prednjih odnosno zadnjih mamarnih kompleksa su zatim spojeni. Rezultati su ukazali da su koncentracije ukupnih proteina, IGF-I i insulina bile značajno više u kolostrumu PMK u odnosu na ZMK a koncentracija IGF-I je ostala značajno viša u mleku PMK u odnosu na ZMK. Nije bilo značajne razlike u koncentraciji masti, suvoj materiji i laktozi između sekreta PMK i ZMK tokom celog ispitivanog perioda. Dodatno, uzimani su uzorci krvi od krmača 1. i 7. dana posle prašenja. Rezultati su ukazali da su koncentracije Ca, glukoze, ukupnih proteina, albumina, globulina, ukupnog bilirubina i insulina značajno porasle od 1. do 7. dana nakon prašenja dok se koncentracija P, uree, kreatin kinaze i IGF-I nije značajno menjala tokom ovog perioda. Početna telesna masa prasadi koja su sisala PMK je bila viša, ali ne značajno, u odnosu na onu koju je sisalo ZMK. Posle toga, prasad koja su sisala PMK su imala veći dnevni telesni prirast nego ona koja su sisala ZMK što je rezultiralo da su 8. dana neonatalnog života prasad koja su sisala PMK imala značajno veću telesnu masu u odnosu na onu koja su sisala ZMK. Na osnovu svega navedenog se može zaključiti da kvalitetniji sastav sekreta PMK u pogledu sadržaja proteina i faktora rasta može da ima uticaj na veći telesni prirast prasadi koja sisaju ove komplekse u odnosu na prasad koja sisaju ZMK.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Acta Veterinaria-Beograd",
title = "Relationship between growth of nursing pigs and composition of sow colostrum and milk from anterior and posterior mammary glands, Zavisnost rasta novorođene prasadi od sastava kolostruma i mleka prednjih odnosno zadnjih mamarnih kompleksa krmača",
volume = "63",
number = "5-6",
pages = "537-548",
doi = "10.2298/AVB1306537S"
}

Šamanc, H., Sladojević, Ž., Vujanac, I., Prodanović, R., Kirovski, M., Dodovski, P.,& Kirovski, D.. (2013). Relationship between growth of nursing pigs and composition of sow colostrum and milk from anterior and posterior mammary glands. in Acta Veterinaria-Beograd
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 63(5-6), 537-548.
https://doi.org/10.2298/AVB1306537S

Šamanc H, Sladojević Ž, Vujanac I, Prodanović R, Kirovski M, Dodovski P, Kirovski D. Relationship between growth of nursing pigs and composition of sow colostrum and milk from anterior and posterior mammary glands. in Acta Veterinaria-Beograd. 2013;63(5-6):537-548.
doi:10.2298/AVB1306537S .

Šamanc, Horea, Sladojević, Željko, Vujanac, Ivan, Prodanović, Radiša, Kirovski, M., Dodovski, Petar, Kirovski, Danijela, "Relationship between growth of nursing pigs and composition of sow colostrum and milk from anterior and posterior mammary glands" in Acta Veterinaria-Beograd, 63, no. 5-6 (2013):537-548,
https://doi.org/10.2298/AVB1306537S . .

TY  - JOUR
AU  - Prodanović, Radiša
AU  - Kirovski, Danijela
AU  - Vujanac, Ivan
AU  - Đurić, M.
AU  - Korićanac, Goran
AU  - Vranješ-Đurić, Sanja
AU  - Ignjatović, Marija
AU  - Šamanc, Horea
PY  - 2013
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1047
AB  - The aim of this study was to compare insulin responsevness to acute glucose infusion in cows of Holstein Friesian (HF) and Buša breeds during the peripartal period. Eight cows per each group (HF and Buša), were chosen. At day 7 prior to calving (ante partum) and day 14 after calving (post partum) animals were subjected to a glucose tolerance test (GTT). Blood samples were taken immediately before infusion and 15, 30, 60, 120 and 180 min thereafter. Glucose and insulin concentrations were measured in each blood sample, while BHBA and NEFA were measured only in samples taken before the infusion. QUICKY an indicator of insulin resistance in cows was calculated. Basal glycemia did not significantly differ between the breeds. Basal insulinemia was significantly higher in Buša than in HF cows in both examined periods (p lt 0.001, respectively). Basal NEFA levels tended (p=0.06) to be higher in Buša cows compared with those of HF ante partum, and was significantly higher (p lt 0.001) post partum. Basal BHBA was significantly lower in Buša than HF cows in both examined periods (p lt 0.01; p lt 0.001). QUICKI was significantly lower in Buša compared to HF cows both ante partum and post partum periods (p lt 0.001, respectively). Glycemia determined during GTT were higher in Buša than HF cows, both ante partum and post partum, but significantly starting from minute 15 ante partum i.e. minute 30 post partum. Insulinemia determined during GTT was significantly lower at min 15, and significantly higher starting from min 90 in Buša than HF cows, both ante partum and post partum. Results obtained in this study indicate on difference in insulin responsevness to acute glucose infusion between the examined breeds, which is probably a consequence of the difference in the degree of negative energy balance rather than of selection on high milk production. Namely, decreased insulin tissues sensitivity and decreased insulin responsiveness in Buša compared to HF cows is probably the consequence of inadequate energy intake from alimentary sources which leads to enhanced usage of energy from body reserves.
AB  - Cilj ovog rada je bio da se uporedi insulinski odgovor na akutnu infuziju glukoze kod krava holštajn frizijske rase (HF) i buše tokom peripartalnog perioda. Za ispitivanja je odabrano po osam krava obe rase. Sedam dana pre teljenja (ante partum) i 14 dana posle teljenja (post partum), životinje su podvrgnute testu tolerancije na glukozu (GTT). Uzorci krvi su uzimani neposredno pre aplikacije glukoze, kao i 15, 30, 60, 120 i 180 minuta kasnije. U svakom uzorku su određivane koncentracije glukoze i insulina, dok su koncentracije BHBA i NEFA određivane samo u uzorcima uzetim pre infuzije. Kao pokazatelj insulinske rezistencije kod krava je izračunat QUICKI. Bazalna vrednost glikemije se nije značajno razlikovala između krava različitih rasa, dok je vrednost bazalne insulinemije bila značajno viša kod krava rase buša nego HF u oba ispitivana perioda (p lt 0,001, pojedinač no). Bazalna vrednost koncentracija NEFA je imala tendenciju (p = 0,06) povećanja kod krava rase buša u odnosu na HF ante partum, a bila je značajno viša (p lt 0,001) post partum. Bazalna vrednost koncentracije BHBA je bila značajno niža kod krava rase buša nego kod HF tokom oba ispitivana perioda (p lt 0,01; p lt 0,001). QUICKI je bio značajno niži kod krava rase buša u odnosu na HF kako ante partum tako post partum (p lt 0,001, pojedinačno) ukazujući na manju senzitivnost tkiva na insulin kod krava rase buša. Koncentracija glukoze je tokom izvođenja GTT bila viša kod krava rase buša u odnosu na HF, kako ante partum tako i post partum, s tim da je ova razlika bila značajna počevši od 30. minuta testa ante partum i 15. minuta testa post partum. Koncentracija insulina je tokom izvođenja testa bila značajno niža 15. minuta, a značajno viša počevši od 90. minuta testa kod krava rase buša u odnosu na HF rasu kako ante partum tako i post partum. Razultati dobijeni u ovom radu ukazuju na razliku u insulinskom odgovoru na akutnu aplikaciju glukoze između dve ispitivane rase krava, a koja je najverovatnije posledica razlike u balansu energije, a ne selekcije na visoku proizvodnju mleka. Naime, smanjena senzitivnost tkiva na insulin i smanjeni insulinski odgovor krava rase buša u odnosu na HF je verovatno posledica smanjenog unošenja energije iz alimentarnih izvora zbog čega se u većem stepenu koriste izvori energije iz telesnih depoa.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Acta Veterinaria-Beograd
T1  - Insulin responses to acute glucose infusions in Buša and Holstein-Friesian cattle breed during the peripartum period: Comparative study
T1  - Insulinski odgovor na akutnu infuziju glukoze kod buše i hoštajn frizijske rase goveda tokom peripartalnog perioda - uporedna analiza
VL  - 63
IS  - 4
SP  - 373
EP  - 384
DO  - 10.2298/AVB1304373P
ER  - 

@article{
author = "Prodanović, Radiša and Kirovski, Danijela and Vujanac, Ivan and Đurić, M. and Korićanac, Goran and Vranješ-Đurić, Sanja and Ignjatović, Marija and Šamanc, Horea",
year = "2013",
abstract = "The aim of this study was to compare insulin responsevness to acute glucose infusion in cows of Holstein Friesian (HF) and Buša breeds during the peripartal period. Eight cows per each group (HF and Buša), were chosen. At day 7 prior to calving (ante partum) and day 14 after calving (post partum) animals were subjected to a glucose tolerance test (GTT). Blood samples were taken immediately before infusion and 15, 30, 60, 120 and 180 min thereafter. Glucose and insulin concentrations were measured in each blood sample, while BHBA and NEFA were measured only in samples taken before the infusion. QUICKY an indicator of insulin resistance in cows was calculated. Basal glycemia did not significantly differ between the breeds. Basal insulinemia was significantly higher in Buša than in HF cows in both examined periods (p lt 0.001, respectively). Basal NEFA levels tended (p=0.06) to be higher in Buša cows compared with those of HF ante partum, and was significantly higher (p lt 0.001) post partum. Basal BHBA was significantly lower in Buša than HF cows in both examined periods (p lt 0.01; p lt 0.001). QUICKI was significantly lower in Buša compared to HF cows both ante partum and post partum periods (p lt 0.001, respectively). Glycemia determined during GTT were higher in Buša than HF cows, both ante partum and post partum, but significantly starting from minute 15 ante partum i.e. minute 30 post partum. Insulinemia determined during GTT was significantly lower at min 15, and significantly higher starting from min 90 in Buša than HF cows, both ante partum and post partum. Results obtained in this study indicate on difference in insulin responsevness to acute glucose infusion between the examined breeds, which is probably a consequence of the difference in the degree of negative energy balance rather than of selection on high milk production. Namely, decreased insulin tissues sensitivity and decreased insulin responsiveness in Buša compared to HF cows is probably the consequence of inadequate energy intake from alimentary sources which leads to enhanced usage of energy from body reserves., Cilj ovog rada je bio da se uporedi insulinski odgovor na akutnu infuziju glukoze kod krava holštajn frizijske rase (HF) i buše tokom peripartalnog perioda. Za ispitivanja je odabrano po osam krava obe rase. Sedam dana pre teljenja (ante partum) i 14 dana posle teljenja (post partum), životinje su podvrgnute testu tolerancije na glukozu (GTT). Uzorci krvi su uzimani neposredno pre aplikacije glukoze, kao i 15, 30, 60, 120 i 180 minuta kasnije. U svakom uzorku su određivane koncentracije glukoze i insulina, dok su koncentracije BHBA i NEFA određivane samo u uzorcima uzetim pre infuzije. Kao pokazatelj insulinske rezistencije kod krava je izračunat QUICKI. Bazalna vrednost glikemije se nije značajno razlikovala između krava različitih rasa, dok je vrednost bazalne insulinemije bila značajno viša kod krava rase buša nego HF u oba ispitivana perioda (p lt 0,001, pojedinač no). Bazalna vrednost koncentracija NEFA je imala tendenciju (p = 0,06) povećanja kod krava rase buša u odnosu na HF ante partum, a bila je značajno viša (p lt 0,001) post partum. Bazalna vrednost koncentracije BHBA je bila značajno niža kod krava rase buša nego kod HF tokom oba ispitivana perioda (p lt 0,01; p lt 0,001). QUICKI je bio značajno niži kod krava rase buša u odnosu na HF kako ante partum tako post partum (p lt 0,001, pojedinačno) ukazujući na manju senzitivnost tkiva na insulin kod krava rase buša. Koncentracija glukoze je tokom izvođenja GTT bila viša kod krava rase buša u odnosu na HF, kako ante partum tako i post partum, s tim da je ova razlika bila značajna počevši od 30. minuta testa ante partum i 15. minuta testa post partum. Koncentracija insulina je tokom izvođenja testa bila značajno niža 15. minuta, a značajno viša počevši od 90. minuta testa kod krava rase buša u odnosu na HF rasu kako ante partum tako i post partum. Razultati dobijeni u ovom radu ukazuju na razliku u insulinskom odgovoru na akutnu aplikaciju glukoze između dve ispitivane rase krava, a koja je najverovatnije posledica razlike u balansu energije, a ne selekcije na visoku proizvodnju mleka. Naime, smanjena senzitivnost tkiva na insulin i smanjeni insulinski odgovor krava rase buša u odnosu na HF je verovatno posledica smanjenog unošenja energije iz alimentarnih izvora zbog čega se u većem stepenu koriste izvori energije iz telesnih depoa.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Acta Veterinaria-Beograd",
title = "Insulin responses to acute glucose infusions in Buša and Holstein-Friesian cattle breed during the peripartum period: Comparative study, Insulinski odgovor na akutnu infuziju glukoze kod buše i hoštajn frizijske rase goveda tokom peripartalnog perioda - uporedna analiza",
volume = "63",
number = "4",
pages = "373-384",
doi = "10.2298/AVB1304373P"
}

Prodanović, R., Kirovski, D., Vujanac, I., Đurić, M., Korićanac, G., Vranješ-Đurić, S., Ignjatović, M.,& Šamanc, H.. (2013). Insulin responses to acute glucose infusions in Buša and Holstein-Friesian cattle breed during the peripartum period: Comparative study. in Acta Veterinaria-Beograd
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 63(4), 373-384.
https://doi.org/10.2298/AVB1304373P

Prodanović R, Kirovski D, Vujanac I, Đurić M, Korićanac G, Vranješ-Đurić S, Ignjatović M, Šamanc H. Insulin responses to acute glucose infusions in Buša and Holstein-Friesian cattle breed during the peripartum period: Comparative study. in Acta Veterinaria-Beograd. 2013;63(4):373-384.
doi:10.2298/AVB1304373P .

Prodanović, Radiša, Kirovski, Danijela, Vujanac, Ivan, Đurić, M., Korićanac, Goran, Vranješ-Đurić, Sanja, Ignjatović, Marija, Šamanc, Horea, "Insulin responses to acute glucose infusions in Buša and Holstein-Friesian cattle breed during the peripartum period: Comparative study" in Acta Veterinaria-Beograd, 63, no. 4 (2013):373-384,
https://doi.org/10.2298/AVB1304373P . .

TY  - CONF
AU  - Zarcula, Simona
AU  - Cernescu, Horia
AU  - Kirovski, Danijela
AU  - Šamanc, Horea
AU  - Mircu, Calin
AU  - Frunza, Ilinca
AU  - Chirila, David
AU  - Paul, Cristina
AU  - Tulcan, Camelia
PY  - 2013
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/1051
PB  - Current Biology Ltd, London
C3  - Current Opinion in Biotechnology
T1  - Effects of clinoptilolite added in colostrum on the concentration of serum minerals in calves
VL  - 24
SP  - S49
EP  - S49
DO  - 10.1016/j.copbio.2013.05.113
ER  - 

@conference{
author = "Zarcula, Simona and Cernescu, Horia and Kirovski, Danijela and Šamanc, Horea and Mircu, Calin and Frunza, Ilinca and Chirila, David and Paul, Cristina and Tulcan, Camelia",
year = "2013",
publisher = "Current Biology Ltd, London",
journal = "Current Opinion in Biotechnology",
title = "Effects of clinoptilolite added in colostrum on the concentration of serum minerals in calves",
volume = "24",
pages = "S49-S49",
doi = "10.1016/j.copbio.2013.05.113"
}

Zarcula, S., Cernescu, H., Kirovski, D., Šamanc, H., Mircu, C., Frunza, I., Chirila, D., Paul, C.,& Tulcan, C.. (2013). Effects of clinoptilolite added in colostrum on the concentration of serum minerals in calves. in Current Opinion in Biotechnology
Current Biology Ltd, London., 24, S49-S49.
https://doi.org/10.1016/j.copbio.2013.05.113

Zarcula S, Cernescu H, Kirovski D, Šamanc H, Mircu C, Frunza I, Chirila D, Paul C, Tulcan C. Effects of clinoptilolite added in colostrum on the concentration of serum minerals in calves. in Current Opinion in Biotechnology. 2013;24:S49-S49.
doi:10.1016/j.copbio.2013.05.113 .

Zarcula, Simona, Cernescu, Horia, Kirovski, Danijela, Šamanc, Horea, Mircu, Calin, Frunza, Ilinca, Chirila, David, Paul, Cristina, Tulcan, Camelia, "Effects of clinoptilolite added in colostrum on the concentration of serum minerals in calves" in Current Opinion in Biotechnology, 24 (2013):S49-S49,
https://doi.org/10.1016/j.copbio.2013.05.113 . .

TY  - JOUR
AU  - Prodanović, Radiša
AU  - Kirovski, Danijela
AU  - Šamanc, Horea
AU  - Vujanac, Ivan
AU  - Ivetić, Vojin
AU  - Savić, Božidar
AU  - Kureljušić, Branislav
PY  - 2012
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2490
AB  - The objective of the study was to estimate herd-basis energy status (ES) using body condition scoring (BCS) and shortened metabolic profiles in multiparous clinically healthy dairy cows and to evaluate if such profiles can be informative in herd investigation to indicate on metabolic herd problems. A total of 180 Holstein cows from commercial herd were clinically examined and assigned to one of 3 equal groups: dry cows (15 days before expected calving), puerperal (10 days after calving) and cows at day 60 of lactation. Blood were sampled and analyzed for total protein, albumin, urea nitrogen (UN), β-hydroxybutyrate (BHBA), glucose and total bilirubin. Liver samples by percutaneous biopsies were obtained at puerperal period and tested for lipid content. The cows had a mean BCS of 3.92±0.03 at dry period, 3.08 ± 0.03 at puerperal period and 2.82 ± 0.02 at day 60 of lactation. Average total protein, albumin and glucose concentrations were within the physiological range, whereas UN was higher than physiologically accepted, at all examined periods. BHBA levels increased after calving and 61.66% of puerperal cows had BHBA levels above 1 mmol/L. Average total bilirubin concentration after calving was higher than recommended. Concentrations of UN, BHBA and total bilirubin were positively correlated, whereas concentrations of total protein and glucose were negatively correlated with fatty
liver degree. Albumin concentration was not correlated with fatty liver degree. In conclusion, although clinically healthy the examined cows were not in adequate ES during the transition period. Consequently, 55% of the cows had moderate to severe fatty liver. A sufficient number of highly significant correlations suggest that employed metabolic profiles may offer an indirect means of estimation energy status on a herd basis.
PB  - Academic Journals
T2  - African Journal of Agricultural Research
T1  - Estimation of herd-basis energy status in clinically healthy Holstein cows: Practical implications of body condition scoring and shortened metabolic profiles
VL  - 7
SP  - 418
EP  - 425
DO  - 10.5897/AJAR11.1432
ER  - 

@article{
author = "Prodanović, Radiša and Kirovski, Danijela and Šamanc, Horea and Vujanac, Ivan and Ivetić, Vojin and Savić, Božidar and Kureljušić, Branislav",
year = "2012",
abstract = "The objective of the study was to estimate herd-basis energy status (ES) using body condition scoring (BCS) and shortened metabolic profiles in multiparous clinically healthy dairy cows and to evaluate if such profiles can be informative in herd investigation to indicate on metabolic herd problems. A total of 180 Holstein cows from commercial herd were clinically examined and assigned to one of 3 equal groups: dry cows (15 days before expected calving), puerperal (10 days after calving) and cows at day 60 of lactation. Blood were sampled and analyzed for total protein, albumin, urea nitrogen (UN), β-hydroxybutyrate (BHBA), glucose and total bilirubin. Liver samples by percutaneous biopsies were obtained at puerperal period and tested for lipid content. The cows had a mean BCS of 3.92±0.03 at dry period, 3.08 ± 0.03 at puerperal period and 2.82 ± 0.02 at day 60 of lactation. Average total protein, albumin and glucose concentrations were within the physiological range, whereas UN was higher than physiologically accepted, at all examined periods. BHBA levels increased after calving and 61.66% of puerperal cows had BHBA levels above 1 mmol/L. Average total bilirubin concentration after calving was higher than recommended. Concentrations of UN, BHBA and total bilirubin were positively correlated, whereas concentrations of total protein and glucose were negatively correlated with fatty
liver degree. Albumin concentration was not correlated with fatty liver degree. In conclusion, although clinically healthy the examined cows were not in adequate ES during the transition period. Consequently, 55% of the cows had moderate to severe fatty liver. A sufficient number of highly significant correlations suggest that employed metabolic profiles may offer an indirect means of estimation energy status on a herd basis.",
publisher = "Academic Journals",
journal = "African Journal of Agricultural Research",
title = "Estimation of herd-basis energy status in clinically healthy Holstein cows: Practical implications of body condition scoring and shortened metabolic profiles",
volume = "7",
pages = "418-425",
doi = "10.5897/AJAR11.1432"
}

Prodanović, R., Kirovski, D., Šamanc, H., Vujanac, I., Ivetić, V., Savić, B.,& Kureljušić, B.. (2012). Estimation of herd-basis energy status in clinically healthy Holstein cows: Practical implications of body condition scoring and shortened metabolic profiles. in African Journal of Agricultural Research
Academic Journals., 7, 418-425.
https://doi.org/10.5897/AJAR11.1432

Prodanović R, Kirovski D, Šamanc H, Vujanac I, Ivetić V, Savić B, Kureljušić B. Estimation of herd-basis energy status in clinically healthy Holstein cows: Practical implications of body condition scoring and shortened metabolic profiles. in African Journal of Agricultural Research. 2012;7:418-425.
doi:10.5897/AJAR11.1432 .

Prodanović, Radiša, Kirovski, Danijela, Šamanc, Horea, Vujanac, Ivan, Ivetić, Vojin, Savić, Božidar, Kureljušić, Branislav, "Estimation of herd-basis energy status in clinically healthy Holstein cows: Practical implications of body condition scoring and shortened metabolic profiles" in African Journal of Agricultural Research, 7 (2012):418-425,
https://doi.org/10.5897/AJAR11.1432 . .

TY  - JOUR
AU  - Petrujkić, Branko
AU  - Petrujkić, Tihomir
AU  - Šamanc, Horea
AU  - Trailović, Saša
AU  - Jeremić, Ivan
AU  - Nedeljković-Trailović, Jelena
PY  - 2012
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/931
AB  - Despite the fact that today different prevention programs are utilized, the incidence of puerperal metritis and endometritis occurrence has now significantly changed in last 30 years. The goal of this work was to evaluate cow endometritis treatments on the farm with the use of two local antiseptics (povidone iodine and chlorhexidine gluconate) and one antibiotic (cephapirine) and determine which of the treatments is economically most justified for field use in high producing dairy cows. The investigation was done on 90 Holstein-Friesian cows, from 3.5 to 5 old. Animals were checked for endometritis and randomly assigned to one of the groups. Endometritis treatments were performed from 28th till 35th day postpartum with cepharirine, hlorhexidine digluconate and povidon iodide. Highest fertility was achieved in the group of cows treated with cephapirine (83.33%). On the contrary, lowest fertility was determined in the group of cows treated wit 1% povidone iodine solution (76.67%), while the group of cows treated with 0.2% aqueous solution of chlorhexidine digluconate achieved fertility of 80.00%. Shorter service period was observed in the group of cows treated with cephapirine and chlorhexidine digluconate compared to the group of cows treated with % povidone iodine solution. Average number of insemination per successful conception in the group of cows treated with cephapirine and 0.2% chlorhexidine digluconate solution was lower than the one in group of cows treated with 1 % povidone iodine solution.
AB  - Iako se danas primenjuju različiti programi prevencije, incidenca pojavljivanja puerperalnih metritisa i endometritisa u poslednjih 30 godina se nije značajnije promenila. Cilj ovog rada bio je da se uporede rezultati lečenja endometritisa krava, primenom dva lokalna antiseptika (povidon jod i hlorheksidin diglukonat) i jednog antibiotika (cefapirin) i da se utvrdi koji je tretman ekonomski najopravdaniji. Ispitivanje je izvedeno na 90 krava Holštajn frizijske rase starosti 3,5 do 5 godina. Životinje su nakon izvršenog kliničkog pregleda i utvrđivanja statusa uterusa uvršćene u jednu od tri ogledne grupe. Lečenje endometritisa vršeno je u periodu od 28. do 35. dana post partum, preparatima cefapirina, povidon joda i hlorheksidin diglukonata. Najviša plodnost, ustanovljena je u grupi krava koja su tretirane cefapirinom i iznosila je 83,33%. Za razliku od toga, najniža plodnost utvrđena je u grupi krava koje su tretirane 1% povidonom 76,67%, nešto viša kod krava III ogledne grupe (tretirane 0,2% vodenim rastvorom hlorheksidin diglukonata) i iznosila je 80,00%. Servis period u grupi krava koje su tretirane cefapirinom i hlorheksidin diglukonatom je bio značajno kraći nego kod krava koje su tretirane 1% povidon jodom. Indeks osemenjavanja krava tretiranih cefapirinom ili 0,2% hlorheksidin diglukonatom niži je od indeksa osemenjavanja krava tretiranih 1% rastvorom povidon joda.
PB  - Institut PKB Agroekonomik, Padinska skela
T2  - Zbornik naučnih radova Instituta PKB Agroekonomik
T1  - Cephapirine, povidone iodine and chlorhexidine digluconate in dairy cows endometritis treatment
T1  - Cefapirin, povidon jod i hlorheksidin diglukonat u terapiji endometritisa visoko-mlečnih krava
VL  - 18
IS  - 3-4
SP  - 59
EP  - 70
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_931
ER  - 

@article{
author = "Petrujkić, Branko and Petrujkić, Tihomir and Šamanc, Horea and Trailović, Saša and Jeremić, Ivan and Nedeljković-Trailović, Jelena",
year = "2012",
abstract = "Despite the fact that today different prevention programs are utilized, the incidence of puerperal metritis and endometritis occurrence has now significantly changed in last 30 years. The goal of this work was to evaluate cow endometritis treatments on the farm with the use of two local antiseptics (povidone iodine and chlorhexidine gluconate) and one antibiotic (cephapirine) and determine which of the treatments is economically most justified for field use in high producing dairy cows. The investigation was done on 90 Holstein-Friesian cows, from 3.5 to 5 old. Animals were checked for endometritis and randomly assigned to one of the groups. Endometritis treatments were performed from 28th till 35th day postpartum with cepharirine, hlorhexidine digluconate and povidon iodide. Highest fertility was achieved in the group of cows treated with cephapirine (83.33%). On the contrary, lowest fertility was determined in the group of cows treated wit 1% povidone iodine solution (76.67%), while the group of cows treated with 0.2% aqueous solution of chlorhexidine digluconate achieved fertility of 80.00%. Shorter service period was observed in the group of cows treated with cephapirine and chlorhexidine digluconate compared to the group of cows treated with % povidone iodine solution. Average number of insemination per successful conception in the group of cows treated with cephapirine and 0.2% chlorhexidine digluconate solution was lower than the one in group of cows treated with 1 % povidone iodine solution., Iako se danas primenjuju različiti programi prevencije, incidenca pojavljivanja puerperalnih metritisa i endometritisa u poslednjih 30 godina se nije značajnije promenila. Cilj ovog rada bio je da se uporede rezultati lečenja endometritisa krava, primenom dva lokalna antiseptika (povidon jod i hlorheksidin diglukonat) i jednog antibiotika (cefapirin) i da se utvrdi koji je tretman ekonomski najopravdaniji. Ispitivanje je izvedeno na 90 krava Holštajn frizijske rase starosti 3,5 do 5 godina. Životinje su nakon izvršenog kliničkog pregleda i utvrđivanja statusa uterusa uvršćene u jednu od tri ogledne grupe. Lečenje endometritisa vršeno je u periodu od 28. do 35. dana post partum, preparatima cefapirina, povidon joda i hlorheksidin diglukonata. Najviša plodnost, ustanovljena je u grupi krava koja su tretirane cefapirinom i iznosila je 83,33%. Za razliku od toga, najniža plodnost utvrđena je u grupi krava koje su tretirane 1% povidonom 76,67%, nešto viša kod krava III ogledne grupe (tretirane 0,2% vodenim rastvorom hlorheksidin diglukonata) i iznosila je 80,00%. Servis period u grupi krava koje su tretirane cefapirinom i hlorheksidin diglukonatom je bio značajno kraći nego kod krava koje su tretirane 1% povidon jodom. Indeks osemenjavanja krava tretiranih cefapirinom ili 0,2% hlorheksidin diglukonatom niži je od indeksa osemenjavanja krava tretiranih 1% rastvorom povidon joda.",
publisher = "Institut PKB Agroekonomik, Padinska skela",
journal = "Zbornik naučnih radova Instituta PKB Agroekonomik",
title = "Cephapirine, povidone iodine and chlorhexidine digluconate in dairy cows endometritis treatment, Cefapirin, povidon jod i hlorheksidin diglukonat u terapiji endometritisa visoko-mlečnih krava",
volume = "18",
number = "3-4",
pages = "59-70",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_931"
}

Petrujkić, B., Petrujkić, T., Šamanc, H., Trailović, S., Jeremić, I.,& Nedeljković-Trailović, J.. (2012). Cephapirine, povidone iodine and chlorhexidine digluconate in dairy cows endometritis treatment. in Zbornik naučnih radova Instituta PKB Agroekonomik
Institut PKB Agroekonomik, Padinska skela., 18(3-4), 59-70.
https://hdl.handle.net/21.15107/rcub_veterinar_931

Petrujkić B, Petrujkić T, Šamanc H, Trailović S, Jeremić I, Nedeljković-Trailović J. Cephapirine, povidone iodine and chlorhexidine digluconate in dairy cows endometritis treatment. in Zbornik naučnih radova Instituta PKB Agroekonomik. 2012;18(3-4):59-70.
https://hdl.handle.net/21.15107/rcub_veterinar_931 .

Petrujkić, Branko, Petrujkić, Tihomir, Šamanc, Horea, Trailović, Saša, Jeremić, Ivan, Nedeljković-Trailović, Jelena, "Cephapirine, povidone iodine and chlorhexidine digluconate in dairy cows endometritis treatment" in Zbornik naučnih radova Instituta PKB Agroekonomik, 18, no. 3-4 (2012):59-70,
https://hdl.handle.net/21.15107/rcub_veterinar_931 .

TY  - JOUR
AU  - Vujanac, Ivan
AU  - Kirovski, Danijela
AU  - Šamanc, Horea
AU  - Prodanović, Radiša
AU  - Lakić, Nada
AU  - Adamović, M.
AU  - Valčić, Olivera
PY  - 2012
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/885
AB  - The aim of this paper was to evaluate the effects of different environment temperatures on milk production in dairy cows under conditions typical for the moderate-continental climate. The trial was carried out on 40 Holstein Friesian dairy cows (20 cows in summer and 20 cows in the spring season). The cows were monitored from day 30 to day 90 of lactation and housed in a stable which during the summer was not equipped with additional cooling. The temperature-humidity index (THI) was recorded hourly. Milking was measured daily. Based on the results calculated for average all-day THI, during the spring season the cows were not exposed to heat stress. During the summer season, especially in the afternoon hours, the cows were exposed to the effects of moderate to severe heat stress. Average daily milk yield in the spring season from day 30 to day 90 of lactation was significantly higher (p  lt  0.001) compared to the same lactation period during the summer season. Nevertheless, there was no significant difference in average milk yield from day 30 to day 60 of lactation (p = 0.110) between spring and summer season. Average milk yield per cow from day 61 to day 90 of lactation in the summer period was significantly lower (p  lt  0.001) compared to the same period during the spring season. Average daily feed consumption was significantly lower (p  lt  0.001) during the summer compared to spring during whole trial period. In conclusion, although feed consumption was significantly lower during the summer season throught the study, milk production compared to the spring season, was significantly lower only from day 61 to 90 of lactation. This could mean that the negative impact of feed intake on milk production is not as effective during early lactation (until day 60 of lactation), when homeorhetic mechanisms play a significant role in the rearrangement of metabolism, as it is thereafter i.e.from day 61 to 90 of lactation.
PB  - Sivar-Soc Italiana Veterinari Animali Reddito, Cremona
T2  - Large Animal Review
T1  - Milk production in high-yielding dairy cows under different environment temperatures
VL  - 18
IS  - 1
SP  - 31
EP  - 36
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_885
ER  - 

@article{
author = "Vujanac, Ivan and Kirovski, Danijela and Šamanc, Horea and Prodanović, Radiša and Lakić, Nada and Adamović, M. and Valčić, Olivera",
year = "2012",
abstract = "The aim of this paper was to evaluate the effects of different environment temperatures on milk production in dairy cows under conditions typical for the moderate-continental climate. The trial was carried out on 40 Holstein Friesian dairy cows (20 cows in summer and 20 cows in the spring season). The cows were monitored from day 30 to day 90 of lactation and housed in a stable which during the summer was not equipped with additional cooling. The temperature-humidity index (THI) was recorded hourly. Milking was measured daily. Based on the results calculated for average all-day THI, during the spring season the cows were not exposed to heat stress. During the summer season, especially in the afternoon hours, the cows were exposed to the effects of moderate to severe heat stress. Average daily milk yield in the spring season from day 30 to day 90 of lactation was significantly higher (p  lt  0.001) compared to the same lactation period during the summer season. Nevertheless, there was no significant difference in average milk yield from day 30 to day 60 of lactation (p = 0.110) between spring and summer season. Average milk yield per cow from day 61 to day 90 of lactation in the summer period was significantly lower (p  lt  0.001) compared to the same period during the spring season. Average daily feed consumption was significantly lower (p  lt  0.001) during the summer compared to spring during whole trial period. In conclusion, although feed consumption was significantly lower during the summer season throught the study, milk production compared to the spring season, was significantly lower only from day 61 to 90 of lactation. This could mean that the negative impact of feed intake on milk production is not as effective during early lactation (until day 60 of lactation), when homeorhetic mechanisms play a significant role in the rearrangement of metabolism, as it is thereafter i.e.from day 61 to 90 of lactation.",
publisher = "Sivar-Soc Italiana Veterinari Animali Reddito, Cremona",
journal = "Large Animal Review",
title = "Milk production in high-yielding dairy cows under different environment temperatures",
volume = "18",
number = "1",
pages = "31-36",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_885"
}

Vujanac, I., Kirovski, D., Šamanc, H., Prodanović, R., Lakić, N., Adamović, M.,& Valčić, O.. (2012). Milk production in high-yielding dairy cows under different environment temperatures. in Large Animal Review
Sivar-Soc Italiana Veterinari Animali Reddito, Cremona., 18(1), 31-36.
https://hdl.handle.net/21.15107/rcub_veterinar_885

Vujanac I, Kirovski D, Šamanc H, Prodanović R, Lakić N, Adamović M, Valčić O. Milk production in high-yielding dairy cows under different environment temperatures. in Large Animal Review. 2012;18(1):31-36.
https://hdl.handle.net/21.15107/rcub_veterinar_885 .

Vujanac, Ivan, Kirovski, Danijela, Šamanc, Horea, Prodanović, Radiša, Lakić, Nada, Adamović, M., Valčić, Olivera, "Milk production in high-yielding dairy cows under different environment temperatures" in Large Animal Review, 18, no. 1 (2012):31-36,
https://hdl.handle.net/21.15107/rcub_veterinar_885 .

TY  - JOUR
AU  - Kirovski, Danijela
AU  - Šamanc, Horea
AU  - Prodanović, Radiša
PY  - 2012
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/849
AB  - One of the ways to make an assessment of the energy status of cows in lactation is to consider the results obtained from the evaluation of the concentrations of organic milk components. The advantages of this method are that the taking of milk samples is not stressful for the cow and that it is also possible to use the results of milk examinations carried out by dairy plants within regular control. A bulk milk sample from all individual cows can be used, or an individual milk sample. In farms that have herds of unequal genetic potential, it is preferable to assess the energy status by analyzing the results for individual samples, because each animals is assessed individually in that way. Furthermore, the use of individual milk samples is recommended at newly-established farms in order to facilitate the establishment of reference values for the herd. The energy status of cows is assessed using the milk samples by analyzing fat, protein and urea concentrations and their mutual ratios. Fat and protein concentrations in cow milk vary depending on the breed, the diet, age, stage of lactation, and the season of the year. A fat content lower than the physiological values can be expected in cases of unfavourable diet of the cows during the period around calving or rumen acidosis, and it can be expected to be higher during ketotic conditions. A higher protein content in milk can be expected during a high-protein, and a lower one during a low-protein diet of the cows. The physiological concentration of urea in milk depends on nutritive factors, the season, age, stage of lactation, and body mass. Specifically, older cows, cows in advanced lactation, and cows in the summer period tend to have higher values for urea concentration in milk. Among nutritive factors, the most important is the ratio between energy and proteins in the cow feed ration. In cases when protein content in milk is optimal or above the recommended values but the energy supply is lower, the urea concentration increases to over the range of physiological values. In the event that the feed ration is deficient in both proteins and energy the urea content in milk drops. This work also presents a model for assessing the energy status in cows by analyzing the mutual ratios between the individual milk components (proteins and fat, or urea and proteins) in the individual milk samples. It is possible to determine the energy status of the animal on the basis of the ratio between proteins and fat, and the supply of the cow with proteins and energy on the basis of the ratio between urea and proteins.
AB  - Jedan od načina procene energetskog satusa krava u laktaciji je na osnovu rezultata dobijenih određivanjem koncentracije organskih sastojaka mleka. Prednosti ove metode su u tome što je uzimanje uzorka mleka nestresogeno za kravu i što se mogu koristiti rezultati ispitivanja mleka koje u okviru redovne kontrole vrše mlekare. Za ova ispitivanje se može koristiti zbirni uzorak mleka od svih ili pojedinih krava ili pojedinačni uzorak mleka. Na farmama na kojima postoji neujednačenost genetskog potencijala stada, prednost ima procena energetskog statusa analizom rezultata iz pojedinačnih uzoraka jer se na taj način individualno procenjuje svaka životinja. Dodatna upotreba pojedinačnih uzoraka mleka se preporučuje na novoformiranim farmama radi uspostavljanja referentnih vrednosti za stada. Za procenu energetskog statusa krava u uzorcima mleka koriste se koncentracija masti, proteina i uree, kao i njhov međusobni odnos. Koncentracije masti i proteina u mleku krava variraju zavisno od rase, ishrane, starosti, faze laktacije i godišenjeg doba. Sadržaj masti u mleku niži od fizioloških vrednosti očekuje se u slučajevima nepovoljne ishrane krava u periodu oko telenja ili acidoze buraga, a viši kod ketoznog stanja. Viši sadržaj proteina u mleku očekuje se kod visokoproteinske, a niži kod niskoproteinske ishrane. Fiziološka koncentracija uree u mleku krava zavisi od nutritivnih faktora, sezone, starosti krava, stadijuma laktacije i telesne mase. Tako, starije krave, krave u odmakloj laktaciji i krave u letnjem periodu, imaju tendeciju ka povećanim vrednostima koncentracije uree u mleku. Od nutritivnih faktora najznačajniji je odnos energije i belančevina u obroku krava. Ukoliko je sadržaj proteina u mleku optimalan ili iznad preporučenih vrednosti, ali snabdevenost energijom niža, koncentracija uree raste iznad opsega fizioloških vrednosti. Ako je obrok deficitaran i u proteinima i energiji sadržaj uree u mleku opada. Dodatno, u ovom radu je prikazan model za procenu energetskog statusa krava analizom međusobnog odnosa pojedinih sastojaka mleka (proteina i masti odnosno uree i proteina) u pojedinačnim uzorcima mleka. Na osnovu odnosa proteina i masti u pojedinačnim uzorcima mleka moguće je odrediti energetski status jedinke a na osnovu odnosa uree i proteina snabdevenost krava proteinima i energijom.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Veterinarski Glasnik
T1  - Assessment of dairy cow energy status using milk fat, protein and urea concentrations
T1  - Procena energetskog statusa krava na osnovu koncentracije masti, proteina i uree u mleku
VL  - 66
IS  - 1-2
SP  - 97
EP  - 110
DO  - 10.2298/VETGL1202097K
ER  - 

@article{
author = "Kirovski, Danijela and Šamanc, Horea and Prodanović, Radiša",
year = "2012",
abstract = "One of the ways to make an assessment of the energy status of cows in lactation is to consider the results obtained from the evaluation of the concentrations of organic milk components. The advantages of this method are that the taking of milk samples is not stressful for the cow and that it is also possible to use the results of milk examinations carried out by dairy plants within regular control. A bulk milk sample from all individual cows can be used, or an individual milk sample. In farms that have herds of unequal genetic potential, it is preferable to assess the energy status by analyzing the results for individual samples, because each animals is assessed individually in that way. Furthermore, the use of individual milk samples is recommended at newly-established farms in order to facilitate the establishment of reference values for the herd. The energy status of cows is assessed using the milk samples by analyzing fat, protein and urea concentrations and their mutual ratios. Fat and protein concentrations in cow milk vary depending on the breed, the diet, age, stage of lactation, and the season of the year. A fat content lower than the physiological values can be expected in cases of unfavourable diet of the cows during the period around calving or rumen acidosis, and it can be expected to be higher during ketotic conditions. A higher protein content in milk can be expected during a high-protein, and a lower one during a low-protein diet of the cows. The physiological concentration of urea in milk depends on nutritive factors, the season, age, stage of lactation, and body mass. Specifically, older cows, cows in advanced lactation, and cows in the summer period tend to have higher values for urea concentration in milk. Among nutritive factors, the most important is the ratio between energy and proteins in the cow feed ration. In cases when protein content in milk is optimal or above the recommended values but the energy supply is lower, the urea concentration increases to over the range of physiological values. In the event that the feed ration is deficient in both proteins and energy the urea content in milk drops. This work also presents a model for assessing the energy status in cows by analyzing the mutual ratios between the individual milk components (proteins and fat, or urea and proteins) in the individual milk samples. It is possible to determine the energy status of the animal on the basis of the ratio between proteins and fat, and the supply of the cow with proteins and energy on the basis of the ratio between urea and proteins., Jedan od načina procene energetskog satusa krava u laktaciji je na osnovu rezultata dobijenih određivanjem koncentracije organskih sastojaka mleka. Prednosti ove metode su u tome što je uzimanje uzorka mleka nestresogeno za kravu i što se mogu koristiti rezultati ispitivanja mleka koje u okviru redovne kontrole vrše mlekare. Za ova ispitivanje se može koristiti zbirni uzorak mleka od svih ili pojedinih krava ili pojedinačni uzorak mleka. Na farmama na kojima postoji neujednačenost genetskog potencijala stada, prednost ima procena energetskog statusa analizom rezultata iz pojedinačnih uzoraka jer se na taj način individualno procenjuje svaka životinja. Dodatna upotreba pojedinačnih uzoraka mleka se preporučuje na novoformiranim farmama radi uspostavljanja referentnih vrednosti za stada. Za procenu energetskog statusa krava u uzorcima mleka koriste se koncentracija masti, proteina i uree, kao i njhov međusobni odnos. Koncentracije masti i proteina u mleku krava variraju zavisno od rase, ishrane, starosti, faze laktacije i godišenjeg doba. Sadržaj masti u mleku niži od fizioloških vrednosti očekuje se u slučajevima nepovoljne ishrane krava u periodu oko telenja ili acidoze buraga, a viši kod ketoznog stanja. Viši sadržaj proteina u mleku očekuje se kod visokoproteinske, a niži kod niskoproteinske ishrane. Fiziološka koncentracija uree u mleku krava zavisi od nutritivnih faktora, sezone, starosti krava, stadijuma laktacije i telesne mase. Tako, starije krave, krave u odmakloj laktaciji i krave u letnjem periodu, imaju tendeciju ka povećanim vrednostima koncentracije uree u mleku. Od nutritivnih faktora najznačajniji je odnos energije i belančevina u obroku krava. Ukoliko je sadržaj proteina u mleku optimalan ili iznad preporučenih vrednosti, ali snabdevenost energijom niža, koncentracija uree raste iznad opsega fizioloških vrednosti. Ako je obrok deficitaran i u proteinima i energiji sadržaj uree u mleku opada. Dodatno, u ovom radu je prikazan model za procenu energetskog statusa krava analizom međusobnog odnosa pojedinih sastojaka mleka (proteina i masti odnosno uree i proteina) u pojedinačnim uzorcima mleka. Na osnovu odnosa proteina i masti u pojedinačnim uzorcima mleka moguće je odrediti energetski status jedinke a na osnovu odnosa uree i proteina snabdevenost krava proteinima i energijom.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Veterinarski Glasnik",
title = "Assessment of dairy cow energy status using milk fat, protein and urea concentrations, Procena energetskog statusa krava na osnovu koncentracije masti, proteina i uree u mleku",
volume = "66",
number = "1-2",
pages = "97-110",
doi = "10.2298/VETGL1202097K"
}

Kirovski, D., Šamanc, H.,& Prodanović, R.. (2012). Assessment of dairy cow energy status using milk fat, protein and urea concentrations. in Veterinarski Glasnik
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 66(1-2), 97-110.
https://doi.org/10.2298/VETGL1202097K

Kirovski D, Šamanc H, Prodanović R. Assessment of dairy cow energy status using milk fat, protein and urea concentrations. in Veterinarski Glasnik. 2012;66(1-2):97-110.
doi:10.2298/VETGL1202097K .

Kirovski, Danijela, Šamanc, Horea, Prodanović, Radiša, "Assessment of dairy cow energy status using milk fat, protein and urea concentrations" in Veterinarski Glasnik, 66, no. 1-2 (2012):97-110,
https://doi.org/10.2298/VETGL1202097K . .

TY  - JOUR
AU  - Kirovski, Danijela
AU  - Lazarević, Miodrag
AU  - Stojić, Velibor
AU  - Šamanc, Horea
AU  - Vujanac, Ivan
AU  - Nedić, Olgica
AU  - Masnikosa, Romana
PY  - 2011
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/808
AB  - The aim of this study was to examine changes in some hormones concentrations in calves during the first 32 hours of neonatal life and to estimate their association with glycemia. Thyrty two Holstein breed calves were selected for the study. Blood samples were taken at 30, 60 and 90 minutes postnatal. Calves received pooled colostrum: primary colostum (1.5 L, 2 hours after birth), secondary colostrum (2 L, 14 hours after birth) and tertiary colostrum (2 L, 26 hours after birth). Blood samples were taken at hours 5, 20 and 32 of neonatal life. Concentrations of glucose, insulin, cortisol, thyroid hormones and IGF-I and abundance of IGFBP-1, IGFBP-2 and IGFBP-3 were determined in the blood serum. The T3/T4 ratio was also calculated. Calves were born hypoglycemic (glycemia was 2.56±1.05 mmol/L at birth). Thereafter, glycemia significantly increased (p lt 0.001) to 3.05±0.89 mmol/L at min 90. Glucose concentration showed a further increase after colostrum intake and was significantly higher than at the initial value in all examined periods (p lt 0.001). During the first 90 minutes of neonatal life insulinemia decreased significantly (p lt 0.001) compared to initial value (26.33±10.05 μIU/L) and it measured 18.66±5.56 μIU/L at min 90. Cortisolemia was highest at minute 30 (85.08±19.36 nmol/L) and than decreased until the end of the experiment (p lt 0.001) compared to initial values in samples obtained during the period of colostrum intake. A significantly high correlation was determined between glycemia and cortisolemia in all examined periods before the first colostrums intake (r2=0.854; p lt 0.01 at min 30; r2=0.742; p lt 0.01 at min 60 and r2=0.551; p lt 0.01 at min 90). T4 concentrations significantly increased during the first 2 hours, while T3 concentrations decreased, significantly from min 30 to min 90 postnatal (p lt 0.05). T3/T4 ratio significantly increased during the first 2 hours of neonatal life. After first colostrum intake, concentrations of both hormones rose significantly compared to the initial level, but T3/T4 ratio did not change and maintained the value determined at minute 90. IGF- 1 concentrations significantly decreased during the first 2 postnatal hours. A significant positive correlation was observed between IGF-1 concentration and insulinemia (r2=0.463; p lt 0.05 at min 30, r2=0.662; p lt 0.01 at min 60 and r2=0.583; p lt 0.01 at min 90). IGFBP-3 abundance significantly decreased, while IGFBP-1 significantly increased in this period. IGFBP-2 abundance was highest at birth. Results presented in this study indicate that the increase in glucose concentration during the first 2 hours of neonatal life, before the first colostrum intake is mainly the result of increased activity of the adrenal cortex in cortisol secretion and extrathyroidal tissue thus providing sufficient triiodothyronine. Immaturity of mechanisms responsible for insulin secretion provides the dominance of catabolic processes. Changes of the IGF system provide a rise of glucose concentration and establishment of energy balance.
AB  - Cilj ovog rada je bio da se ispitaju promene koncentracije pojedinih hormona kod novorođene teladi u prvim satima neonatalnog života i utvrdi njihov uticaj na glikemiju. Odabrana su 32 novorođena teleta Holštajn rase kojima je 30, 60. i 90. minuta postnatalnog života uzeta krv. Telad su bila napajana pulovima kolostruma. Pul primarnog kolostruma davan je u količinama od po 1,5 litar 2 sata nakon rođenja, dok su pulovi sekundarnog i tercijarnog kolostruma davani 12, odnosno 24 sata kasnije, u količinama od po 2 litra. Tokom perioda kolostralnog napoja, teladi je uzorkovana krv 5, 20 i 32. sata nakon rođenja. U uzorcima krvi određ ivana je koncentracija glukoze, insulina, kortizola, tireoidnih hormona i IGF-I, kao i zastupljenost IGFBP-1, IGFBP-2 i IGFBP-3. Takođe je obračunat indeks konverzije T3 u T4. Telad su bila rođena u stanju hipoglikemije (koncentracija glukoze na rođenju je iznosila 2,56 ± 1,05 mmol/l). Nakon toga, glikemija je značajno porasla (p lt 0,001) do 3,05 ±0,89 mmol/l (90. minut). Porast koncentracije glukoze je nastavljen i nakon unosa kolostruma, tako da je glikemija u svim ispitivanim uzorcima bila značajno veća u odnosu na početnu vrednost (p lt 0,001). Tokom prvih 90 minuta neonatalnog života, koncentracija insulina se značajno smanjivala (p lt  0,001) u odnosu na početnu vrednost (26,33 ± 10,05 μIU/l) tako da je 90. minuta postnatalnog života bila 18,66 ± 5,56 μIU/l. Porast insulinemije nakon unosa kolostruma nije bio značajan u odnosu na vrednost određenu 90. minuta. Koncentracija kortizola je bila najviša 30 minuta nakon teljenja (85,08 ± 19,36 nmol/l) a zatim je opadala do kraja perioda ispitivanja i to značajno u odnosu na početnu vrednost (p lt 0,001) u uzorcima dobijenim nakon unosa kolostruma. Visoka pozitivna korelacija je utvrđena između glikemije i kortizolemije u svim ispitivanim terminima pre kolostralnog napoja (r2 = 0,854 u 30. minutu; r2 = 0,742 u 60. minutu i r2= 0,551 u 90. minutu). Koncentracija T4 je značajno rasla tokom prva dva sata neonatalnog života, dok se koncentracija T3 smanjila, značajno od 30. do 90. minuta neonatalnog života (p lt 0,05). Konverzija T3 u T4 je značajno porasla tokom prva dva sata života. Nakon unosa kolostruma, koncentracija oba tireoidna hormona se povećavala (značajno u odnosu na početnu vrednost) a indeks konverzije se nije menjao, već se zadržao na vrednosti ustanovljenoj 90. minuta života. Koncentracija IGF-1 se značajno smanjivala tokom prva 2 sata neonatalnog života. Koncentracija IGF-1 je bila u visokoj pozitivnoj korelaciji sa insulinemijom (r2= 0,463 za 30. minut, r2=0,662 za 60. minut i r2=0,583 za 90. minut). Zastupljenost IGFBP-3 se značajno smanjivala, dok se zastupljenost IGFBP-1 značajno povećavala u ovom periodu. Zastupljenost IGFBP-2 je bila najveća na rođenju. Rezultati prikazani u ovom radu ukazuju da je porast glikemije u prvim satima života, pre unosa kolostruma, prevashodno posledica pojačane aktivnosti kore nadbubrega u sekreciji kortizola i dejodinaza u ekstratireoidnim tkivima koje obezbeđuju povećanu sintezu T3. Sistemi odgovorni za sintezu insulina nisu potpuno funkcionalni u ovom periodu, omogućavajući prevagu kataboličkih u odnosu na anaboličke procese. Promene unutar IGF sistema omogućavaju porast glikemije i uspostavljanje energetske ravnoteže.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Acta Veterinaria-Beograd
T1  - Hormonal status and regulation of glycemia in neonatal calves during the first hours of postnatal life
T1  - Hormonalni status i regulacija glikemije kod novorođene teladi tokom prvih sati postnatalnog života
VL  - 61
IS  - 4
SP  - 349
EP  - 361
DO  - 10.2298/AVB1104349K
ER  - 

@article{
author = "Kirovski, Danijela and Lazarević, Miodrag and Stojić, Velibor and Šamanc, Horea and Vujanac, Ivan and Nedić, Olgica and Masnikosa, Romana",
year = "2011",
abstract = "The aim of this study was to examine changes in some hormones concentrations in calves during the first 32 hours of neonatal life and to estimate their association with glycemia. Thyrty two Holstein breed calves were selected for the study. Blood samples were taken at 30, 60 and 90 minutes postnatal. Calves received pooled colostrum: primary colostum (1.5 L, 2 hours after birth), secondary colostrum (2 L, 14 hours after birth) and tertiary colostrum (2 L, 26 hours after birth). Blood samples were taken at hours 5, 20 and 32 of neonatal life. Concentrations of glucose, insulin, cortisol, thyroid hormones and IGF-I and abundance of IGFBP-1, IGFBP-2 and IGFBP-3 were determined in the blood serum. The T3/T4 ratio was also calculated. Calves were born hypoglycemic (glycemia was 2.56±1.05 mmol/L at birth). Thereafter, glycemia significantly increased (p lt 0.001) to 3.05±0.89 mmol/L at min 90. Glucose concentration showed a further increase after colostrum intake and was significantly higher than at the initial value in all examined periods (p lt 0.001). During the first 90 minutes of neonatal life insulinemia decreased significantly (p lt 0.001) compared to initial value (26.33±10.05 μIU/L) and it measured 18.66±5.56 μIU/L at min 90. Cortisolemia was highest at minute 30 (85.08±19.36 nmol/L) and than decreased until the end of the experiment (p lt 0.001) compared to initial values in samples obtained during the period of colostrum intake. A significantly high correlation was determined between glycemia and cortisolemia in all examined periods before the first colostrums intake (r2=0.854; p lt 0.01 at min 30; r2=0.742; p lt 0.01 at min 60 and r2=0.551; p lt 0.01 at min 90). T4 concentrations significantly increased during the first 2 hours, while T3 concentrations decreased, significantly from min 30 to min 90 postnatal (p lt 0.05). T3/T4 ratio significantly increased during the first 2 hours of neonatal life. After first colostrum intake, concentrations of both hormones rose significantly compared to the initial level, but T3/T4 ratio did not change and maintained the value determined at minute 90. IGF- 1 concentrations significantly decreased during the first 2 postnatal hours. A significant positive correlation was observed between IGF-1 concentration and insulinemia (r2=0.463; p lt 0.05 at min 30, r2=0.662; p lt 0.01 at min 60 and r2=0.583; p lt 0.01 at min 90). IGFBP-3 abundance significantly decreased, while IGFBP-1 significantly increased in this period. IGFBP-2 abundance was highest at birth. Results presented in this study indicate that the increase in glucose concentration during the first 2 hours of neonatal life, before the first colostrum intake is mainly the result of increased activity of the adrenal cortex in cortisol secretion and extrathyroidal tissue thus providing sufficient triiodothyronine. Immaturity of mechanisms responsible for insulin secretion provides the dominance of catabolic processes. Changes of the IGF system provide a rise of glucose concentration and establishment of energy balance., Cilj ovog rada je bio da se ispitaju promene koncentracije pojedinih hormona kod novorođene teladi u prvim satima neonatalnog života i utvrdi njihov uticaj na glikemiju. Odabrana su 32 novorođena teleta Holštajn rase kojima je 30, 60. i 90. minuta postnatalnog života uzeta krv. Telad su bila napajana pulovima kolostruma. Pul primarnog kolostruma davan je u količinama od po 1,5 litar 2 sata nakon rođenja, dok su pulovi sekundarnog i tercijarnog kolostruma davani 12, odnosno 24 sata kasnije, u količinama od po 2 litra. Tokom perioda kolostralnog napoja, teladi je uzorkovana krv 5, 20 i 32. sata nakon rođenja. U uzorcima krvi određ ivana je koncentracija glukoze, insulina, kortizola, tireoidnih hormona i IGF-I, kao i zastupljenost IGFBP-1, IGFBP-2 i IGFBP-3. Takođe je obračunat indeks konverzije T3 u T4. Telad su bila rođena u stanju hipoglikemije (koncentracija glukoze na rođenju je iznosila 2,56 ± 1,05 mmol/l). Nakon toga, glikemija je značajno porasla (p lt 0,001) do 3,05 ±0,89 mmol/l (90. minut). Porast koncentracije glukoze je nastavljen i nakon unosa kolostruma, tako da je glikemija u svim ispitivanim uzorcima bila značajno veća u odnosu na početnu vrednost (p lt 0,001). Tokom prvih 90 minuta neonatalnog života, koncentracija insulina se značajno smanjivala (p lt  0,001) u odnosu na početnu vrednost (26,33 ± 10,05 μIU/l) tako da je 90. minuta postnatalnog života bila 18,66 ± 5,56 μIU/l. Porast insulinemije nakon unosa kolostruma nije bio značajan u odnosu na vrednost određenu 90. minuta. Koncentracija kortizola je bila najviša 30 minuta nakon teljenja (85,08 ± 19,36 nmol/l) a zatim je opadala do kraja perioda ispitivanja i to značajno u odnosu na početnu vrednost (p lt 0,001) u uzorcima dobijenim nakon unosa kolostruma. Visoka pozitivna korelacija je utvrđena između glikemije i kortizolemije u svim ispitivanim terminima pre kolostralnog napoja (r2 = 0,854 u 30. minutu; r2 = 0,742 u 60. minutu i r2= 0,551 u 90. minutu). Koncentracija T4 je značajno rasla tokom prva dva sata neonatalnog života, dok se koncentracija T3 smanjila, značajno od 30. do 90. minuta neonatalnog života (p lt 0,05). Konverzija T3 u T4 je značajno porasla tokom prva dva sata života. Nakon unosa kolostruma, koncentracija oba tireoidna hormona se povećavala (značajno u odnosu na početnu vrednost) a indeks konverzije se nije menjao, već se zadržao na vrednosti ustanovljenoj 90. minuta života. Koncentracija IGF-1 se značajno smanjivala tokom prva 2 sata neonatalnog života. Koncentracija IGF-1 je bila u visokoj pozitivnoj korelaciji sa insulinemijom (r2= 0,463 za 30. minut, r2=0,662 za 60. minut i r2=0,583 za 90. minut). Zastupljenost IGFBP-3 se značajno smanjivala, dok se zastupljenost IGFBP-1 značajno povećavala u ovom periodu. Zastupljenost IGFBP-2 je bila najveća na rođenju. Rezultati prikazani u ovom radu ukazuju da je porast glikemije u prvim satima života, pre unosa kolostruma, prevashodno posledica pojačane aktivnosti kore nadbubrega u sekreciji kortizola i dejodinaza u ekstratireoidnim tkivima koje obezbeđuju povećanu sintezu T3. Sistemi odgovorni za sintezu insulina nisu potpuno funkcionalni u ovom periodu, omogućavajući prevagu kataboličkih u odnosu na anaboličke procese. Promene unutar IGF sistema omogućavaju porast glikemije i uspostavljanje energetske ravnoteže.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Acta Veterinaria-Beograd",
title = "Hormonal status and regulation of glycemia in neonatal calves during the first hours of postnatal life, Hormonalni status i regulacija glikemije kod novorođene teladi tokom prvih sati postnatalnog života",
volume = "61",
number = "4",
pages = "349-361",
doi = "10.2298/AVB1104349K"
}

Kirovski, D., Lazarević, M., Stojić, V., Šamanc, H., Vujanac, I., Nedić, O.,& Masnikosa, R.. (2011). Hormonal status and regulation of glycemia in neonatal calves during the first hours of postnatal life. in Acta Veterinaria-Beograd
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 61(4), 349-361.
https://doi.org/10.2298/AVB1104349K

Kirovski D, Lazarević M, Stojić V, Šamanc H, Vujanac I, Nedić O, Masnikosa R. Hormonal status and regulation of glycemia in neonatal calves during the first hours of postnatal life. in Acta Veterinaria-Beograd. 2011;61(4):349-361.
doi:10.2298/AVB1104349K .

Kirovski, Danijela, Lazarević, Miodrag, Stojić, Velibor, Šamanc, Horea, Vujanac, Ivan, Nedić, Olgica, Masnikosa, Romana, "Hormonal status and regulation of glycemia in neonatal calves during the first hours of postnatal life" in Acta Veterinaria-Beograd, 61, no. 4 (2011):349-361,
https://doi.org/10.2298/AVB1104349K . .

TY  - JOUR
AU  - Šamanc, Horea
AU  - Kirovski, Danijela
AU  - Stojić, Velibor
AU  - Stojanović, Dragica
AU  - Vujanac, Ivan
AU  - Prodanović, Radiša
AU  - Bojković-Kovačević, Slavica
PY  - 2011
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/828
AB  - The aim of this study was to examine the possibility of using results of metabolic profile test in the prediction and diagnosis of fatty liver in Holstein cows. Forty dry cows, 5 to 7 days before calving, were chosen from the commercial dairy herd and included in the study. Four blood samples were taken by jugular venipuncture from each animal: 5 to 7 days before expected calving (dry period), as well as on day 12, 30 and 60 of lactation. Concentrations of glucose, β-hydroxybutyrate (BHBA), total protein, albumin, urea, total bilirubin, calcium and phosphorus concentrations were measured in all blood samples. On day 12 after calving, liver percutaneous biopsies were obtained using a biopsy instrument. Liver tissue lipid content was determined by pathohistological determination. Cows were divided into two groups of equal size based on the degree of lipid accumulation in the liver: healthy cows (0.00 fat, n = 20) and cows with fatty liver syndrome (>20% fat, n = 20). Milking was measured each day from day 7 to day 60 of lactation. Results showed that 5 to 7 days before calving, as well as 12 days after calving, BHBA concentrations were significantly higher (p lt 0.001, respectively) in diseased cows than in healthy cows. Additionally, the concentration of glucose was significantly lower (p lt 0.01) and the concentration of total bilirubin significantly higher (p lt 0.001) in diseased compared to healthy cows, at day 12 of lactation. Thirty days after calving, concentrations of albumin, glucose, BHBA and Ca were significantly lower in diseased compared to healthy cows (p lt 0.05, p lt 0.01, p lt 0.01 and p lt 0.001, respectively). At day 60 after calving, concentrations of biochemical parameters did not differ between diseased and healthy cows. The lactation curve differed in diseased compared to healthy cows, starting from day 26 of lactation. Starting form that day until day 60 of lactation average daily milk production was significantly higher in healthy than in diseased cows, except on day 32 of lactation when the difference was not significant. Based on these results it can be concluded that the metabolic profile test may be a reliable tool for the prediction and diagnosis of fatty liver in Holstein cows.
AB  - Cilj ovog rada je bio da se ispita mogućnost korišćenja rezultata dobijenih određivanjem metaboličkog profila u predviđanju i dijagnostikovanju sindroma masne jetre kod krava holštajn rase. U ogled je bilo uključeno 40 krava holštajn rase u periodu zasušenja, odnosno 5 do 7 dana pre očekivanog termina teljenja. Kravama su uzorci krvi uzeti punkcijom vene jugularis 4 puta i to 5 do 7 dana pre očekivanog termina teljenja, kao i 12., 30. i 60. dana laktacije. U uzorcima krvi određivane su koncentracije ukupnih proteina, albumina, uree, glukoze, BHBA, ukupnog bilirubina, kalcijuma i fosfora. Dvanaest dana nakon teljenja perkutanom biopsijom uzet je uzorak jetre u kome je, patohistološkim pregledom, određen sadržaj ukupnih lipida. Nakon pregleda tkiva jetre krave su podeljene u dve jednake grupe. Krave kod kojih je stepen zamašćenje jetre bio veći od 20% (obolele krave, n = 20) i krave bez prisustva masnih kapljica u uzorcima jetre (zdrave krave, n = 20). Mlečnost je praćena svakodnevno od sedmog do 60. dana laktacije. Dobijeni rezultati su ukazali da je 5 do 7 dana pre očekivanog termina teljenja kao i 12. dana laktacije koncentracija BHBA bila značajno viša (p lt 0.001, pojedinačno) kod obolelih nego kod zdravih krava. Takođe, 12 dana nakon teljenja, koncentracija glukoze (p lt 0.01) je bila značajno niža, a koncentracija bilirubina značajno viša (p lt 0.001) kod obolelih nego zdravih krava. Tridesetog dana nakon teljenja koncentracija albumina, glukoze, BHBA i Ca je bila značajno niža kod obolelih u odnosu na zdrave krave (p lt 0,05; p lt 0,01; p lt 0,01 i p lt 0,001, pojedinač no). Šezdesetog dana nakon teljenja koncentracije ispitivanih parametara se nisu značajno razlikovale između obolelih i zdravih krava. Laktaciona kriva je imala različiti trend kod zdravih i bolesnih krava počevši od 26. dana nakon teljenja. Od tog dana pa do 60. dana laktacije prosečna dnevna mlečnost je bila značajno viša kod zdravih nego obolelih krava, izuzev 32. dana laktacije kada ta razlika nije bila značajna. Na osnovu dobijenih rezultata može se zaključiti da se metabolički profil može sa visokom pouzdanošću koristiti u predviđanju i dijagnostici zamašćenja jetre kod krava Holštajn rase.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Acta Veterinaria-Beograd
T1  - Application of the metabolic profile test in the prediction and diagnosis of fatty liver in Holstein cows
T1  - Primena metaboličkog profila u predviđanju i dijagnozi masne jetre kod krava holštajn rase
VL  - 61
IS  - 5-6
SP  - 543
EP  - 553
DO  - 10.2298/AVB1106543S
ER  - 

@article{
author = "Šamanc, Horea and Kirovski, Danijela and Stojić, Velibor and Stojanović, Dragica and Vujanac, Ivan and Prodanović, Radiša and Bojković-Kovačević, Slavica",
year = "2011",
abstract = "The aim of this study was to examine the possibility of using results of metabolic profile test in the prediction and diagnosis of fatty liver in Holstein cows. Forty dry cows, 5 to 7 days before calving, were chosen from the commercial dairy herd and included in the study. Four blood samples were taken by jugular venipuncture from each animal: 5 to 7 days before expected calving (dry period), as well as on day 12, 30 and 60 of lactation. Concentrations of glucose, β-hydroxybutyrate (BHBA), total protein, albumin, urea, total bilirubin, calcium and phosphorus concentrations were measured in all blood samples. On day 12 after calving, liver percutaneous biopsies were obtained using a biopsy instrument. Liver tissue lipid content was determined by pathohistological determination. Cows were divided into two groups of equal size based on the degree of lipid accumulation in the liver: healthy cows (0.00 fat, n = 20) and cows with fatty liver syndrome (>20% fat, n = 20). Milking was measured each day from day 7 to day 60 of lactation. Results showed that 5 to 7 days before calving, as well as 12 days after calving, BHBA concentrations were significantly higher (p lt 0.001, respectively) in diseased cows than in healthy cows. Additionally, the concentration of glucose was significantly lower (p lt 0.01) and the concentration of total bilirubin significantly higher (p lt 0.001) in diseased compared to healthy cows, at day 12 of lactation. Thirty days after calving, concentrations of albumin, glucose, BHBA and Ca were significantly lower in diseased compared to healthy cows (p lt 0.05, p lt 0.01, p lt 0.01 and p lt 0.001, respectively). At day 60 after calving, concentrations of biochemical parameters did not differ between diseased and healthy cows. The lactation curve differed in diseased compared to healthy cows, starting from day 26 of lactation. Starting form that day until day 60 of lactation average daily milk production was significantly higher in healthy than in diseased cows, except on day 32 of lactation when the difference was not significant. Based on these results it can be concluded that the metabolic profile test may be a reliable tool for the prediction and diagnosis of fatty liver in Holstein cows., Cilj ovog rada je bio da se ispita mogućnost korišćenja rezultata dobijenih određivanjem metaboličkog profila u predviđanju i dijagnostikovanju sindroma masne jetre kod krava holštajn rase. U ogled je bilo uključeno 40 krava holštajn rase u periodu zasušenja, odnosno 5 do 7 dana pre očekivanog termina teljenja. Kravama su uzorci krvi uzeti punkcijom vene jugularis 4 puta i to 5 do 7 dana pre očekivanog termina teljenja, kao i 12., 30. i 60. dana laktacije. U uzorcima krvi određivane su koncentracije ukupnih proteina, albumina, uree, glukoze, BHBA, ukupnog bilirubina, kalcijuma i fosfora. Dvanaest dana nakon teljenja perkutanom biopsijom uzet je uzorak jetre u kome je, patohistološkim pregledom, određen sadržaj ukupnih lipida. Nakon pregleda tkiva jetre krave su podeljene u dve jednake grupe. Krave kod kojih je stepen zamašćenje jetre bio veći od 20% (obolele krave, n = 20) i krave bez prisustva masnih kapljica u uzorcima jetre (zdrave krave, n = 20). Mlečnost je praćena svakodnevno od sedmog do 60. dana laktacije. Dobijeni rezultati su ukazali da je 5 do 7 dana pre očekivanog termina teljenja kao i 12. dana laktacije koncentracija BHBA bila značajno viša (p lt 0.001, pojedinačno) kod obolelih nego kod zdravih krava. Takođe, 12 dana nakon teljenja, koncentracija glukoze (p lt 0.01) je bila značajno niža, a koncentracija bilirubina značajno viša (p lt 0.001) kod obolelih nego zdravih krava. Tridesetog dana nakon teljenja koncentracija albumina, glukoze, BHBA i Ca je bila značajno niža kod obolelih u odnosu na zdrave krave (p lt 0,05; p lt 0,01; p lt 0,01 i p lt 0,001, pojedinač no). Šezdesetog dana nakon teljenja koncentracije ispitivanih parametara se nisu značajno razlikovale između obolelih i zdravih krava. Laktaciona kriva je imala različiti trend kod zdravih i bolesnih krava počevši od 26. dana nakon teljenja. Od tog dana pa do 60. dana laktacije prosečna dnevna mlečnost je bila značajno viša kod zdravih nego obolelih krava, izuzev 32. dana laktacije kada ta razlika nije bila značajna. Na osnovu dobijenih rezultata može se zaključiti da se metabolički profil može sa visokom pouzdanošću koristiti u predviđanju i dijagnostici zamašćenja jetre kod krava Holštajn rase.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Acta Veterinaria-Beograd",
title = "Application of the metabolic profile test in the prediction and diagnosis of fatty liver in Holstein cows, Primena metaboličkog profila u predviđanju i dijagnozi masne jetre kod krava holštajn rase",
volume = "61",
number = "5-6",
pages = "543-553",
doi = "10.2298/AVB1106543S"
}

Šamanc, H., Kirovski, D., Stojić, V., Stojanović, D., Vujanac, I., Prodanović, R.,& Bojković-Kovačević, S.. (2011). Application of the metabolic profile test in the prediction and diagnosis of fatty liver in Holstein cows. in Acta Veterinaria-Beograd
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 61(5-6), 543-553.
https://doi.org/10.2298/AVB1106543S

Šamanc H, Kirovski D, Stojić V, Stojanović D, Vujanac I, Prodanović R, Bojković-Kovačević S. Application of the metabolic profile test in the prediction and diagnosis of fatty liver in Holstein cows. in Acta Veterinaria-Beograd. 2011;61(5-6):543-553.
doi:10.2298/AVB1106543S .

Šamanc, Horea, Kirovski, Danijela, Stojić, Velibor, Stojanović, Dragica, Vujanac, Ivan, Prodanović, Radiša, Bojković-Kovačević, Slavica, "Application of the metabolic profile test in the prediction and diagnosis of fatty liver in Holstein cows" in Acta Veterinaria-Beograd, 61, no. 5-6 (2011):543-553,
https://doi.org/10.2298/AVB1106543S . .

TY  - JOUR
AU  - Vujanac, Ivan
AU  - Kirovski, Danijela
AU  - Šamanc, Horea
AU  - Prodanović, Radiša
AU  - Adamović, Milan
AU  - Ignjatović, Marija
PY  - 2011
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/833
AB  - The objective of this work was to examine the effect of heat stress on glucose and pH values in blood of high-yielding dairy cows in the early stage of lactation, as well as to determine whether the changes in these parameters are interdependent under such conditions. An experiment was performed on high-yielding dairy cows during the summer and the spring periods. Forty cows were selected, twenty each for the two periods under investigation. In the course of the experiment, the temperature humidity index (THI) was determined for the entire period of investigations, and then also the average daily THI, nightmorning THI (average value of hourly THI measured from 22h on the previous day until 10h of the current day), as well as the day-night THI (average value of hourly THI measured during the period from 10h to 22h of the current day). The pH and glucose concentration were determined in blood samples taken in the morning and afternoon of days 30, 60, and 90 of lactation during the spring and summer periods of the investigations. Based on the results for the THI, it was established that the animals were not exposed to the effect of extreme heat stress during the spring period of investigations, while they were periodically exposed to moderate but also extreme heat stress during the summer, in particular in the afternoon hours. It can be concluded from the results obtained for the blood pH that the cows were in respiratory alkalosis during the summer in the morning and afternoon hours on day 30, in the afternoon hours of days 60 and 90 of lactation, as well as in the afternoon on day 90 of lactation during the spring period of investigations. During the summer period, there were no statistically significant differences between the pH value determined in the morning and afternoon hours on day 30 of lactation, while the pH value was significantly higher in the afternoon hours than in the morning hours on days 60 and 90 of lactation. There were no significant differences between the average values for glucose during the spring period of investigations. During the summer, the average afternoon values for glucose on days 60 and 90 of lactation were significantly lower against the morning values. Glucose concentration measured on day 90 was statistically significantly lower than those for days 30 and 60 of lactation, both in the morning and in the afternoon. Glucose concentration on day 90 of lactation during the summer period was significantly lower against glucose concentration during the spring, both in the morning and in the afternoon hours. During the spring period, there was no significant correlation between blood glucemia and pH, while there was a negative correlation between the electrochemical reaction of blood and glucemia during the summer, but which was significant only in the afternoon hours. The decrease in glucemia in the afternoon hours of days 60 and 90 of lactation during the summer period can be explained by the strong influence of alkalosis on insulin secretion that leads to the increased utilization of glucose in peripheral tissues, which is why its concentration in blood is significantly decreased at that time. This is a form of the metabolism shifting under conditions of heat stress, when it uses glucose predominantly as a source of energy in the cells, as its oxidation releases significantly less heat energy in comparison with the combustion of other metabolites.
AB  - Cilj ovog istraživanja je bio da se ispita uticaj toplotnog stresa na vrednosti glikemije i pH krvi kod visokomlečnih krava u ranoj fazi laktacije, kao i da se utvrdi da li su promene ovih parametara u takvim uslovima međusobno zavisne. Ogled je izveden na visokomlečnim kravama tokom leta i proleća. Odabrano je četrdeset krava, po dvadeset za oba perioda ispitivanja. Tokom ogleda računati su satni toplotni indeksi (THI) za ceo period ispitivanja, a zatim i prosečan dnevni THI, noćnojutarnji THI (prosečna vrednost satnih THI izmerenih u periodu od 22h prethodnog dana do 10h ujutro tekućeg dana), kao i dnevnovečernji THI (prosečna vrednost satnih THI izmerenih u periodu od 10 h do 22 h tekućeg dana). U uzorcima krvi uzetim ujutru i posle podne 30, 60. i 90. dana laktacije tokom prolećnog i letnjeg perioda ispitivanja određivan je pH i koncentracija glukoze. Na osnovu rezultata za THI utvrđeno je da životinje u prolećnom periodu ispitivanja nisu bile izložene delovanju izrazitog toplotnog stresa, dok su tokom leta bile periodič no izložene umerenom, ali i izrazitom toplotnom stresu, posebno u poslepodnevnim satima. Iz dobijenih rezultata za pH krvi se može zaključiti da su krave tokom leta bile u respiratornoj alkalozi 30. dana u jutarnjim i popodnevnim, a 60. i 90. dana laktacije u popodnevnim satima, kao i 90. dana laktacije posle podne tokom prolećnog perioda ispitivanja. Tokom leta nije bilo statistički značajne razlike između pH vrednosti određene u jutarnjim i popodnevnim satima 30. dana laktacije, dok je 60. i 90. dana laktacije popodnevna vrednost za pH bila značajno veća u odnosu na jutarnju. Nije bilo značajnih razlika između prosečnih vrednosti glikemija tokom prolećnog perioda ispitivanja. Tokom leta prosečne popodnevne vrednosti glikemija 60. i 90. dana laktacije bile su značajno niže u odnosu na jutarnje. Glikemije izmerene 90. dana bile su statistički značajno niže od glikemija 30. i 60. dana laktacije, kako jutarnje tako i poslepodnevne. Glikemija je 90. dana laktacije u letnjem periodu bila značajno niža u odnosu na glikemiju tokom proleća, kako u jutarnjim, tako i u popodnevnim satima. Tokom proleć nog perioda nije bilo značajne korelacije između glikemije i pH krvi, dok je tokom leta postojala negativna korelacija između elektrohemijske reakcije krvi i glikemije, a koja je bila značajna samo u popodnevnim satima. Smanjenje glikemije u popodnevnim satima 60. i 90. dana laktacije u letnjem periodu može se objasniti snažnim uticajem alkaloze na lučenje insulina, što dovodi do povećanog iskorišćavanja glukoze u perifernim tkivima, zbog čega se njena koncentracija u krvi tada značajno smanjuje. To je vid prestrojavanja metabolizma u uslovima toplotnog stresa kada organizam prevashodno koristi glukozu kao izvor energije u ćelijama jer se njenom oksidacijom oslobađa značajno manje toplotne energije u odnosu na sagorevanje drugih metabolita.
PB  - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
T2  - Veterinarski Glasnik
T1  - Glucose concentration and blood acid-basis status in high-yielding dairy cows during heat stress
T1  - Koncentracija glukoze i acido-bazni status krvi visokomlečnih krava u uslovima toplotnog stresa
VL  - 65
IS  - 5-6
SP  - 297
EP  - 312
DO  - 10.2298/VETGL1106297V
ER  - 

@article{
author = "Vujanac, Ivan and Kirovski, Danijela and Šamanc, Horea and Prodanović, Radiša and Adamović, Milan and Ignjatović, Marija",
year = "2011",
abstract = "The objective of this work was to examine the effect of heat stress on glucose and pH values in blood of high-yielding dairy cows in the early stage of lactation, as well as to determine whether the changes in these parameters are interdependent under such conditions. An experiment was performed on high-yielding dairy cows during the summer and the spring periods. Forty cows were selected, twenty each for the two periods under investigation. In the course of the experiment, the temperature humidity index (THI) was determined for the entire period of investigations, and then also the average daily THI, nightmorning THI (average value of hourly THI measured from 22h on the previous day until 10h of the current day), as well as the day-night THI (average value of hourly THI measured during the period from 10h to 22h of the current day). The pH and glucose concentration were determined in blood samples taken in the morning and afternoon of days 30, 60, and 90 of lactation during the spring and summer periods of the investigations. Based on the results for the THI, it was established that the animals were not exposed to the effect of extreme heat stress during the spring period of investigations, while they were periodically exposed to moderate but also extreme heat stress during the summer, in particular in the afternoon hours. It can be concluded from the results obtained for the blood pH that the cows were in respiratory alkalosis during the summer in the morning and afternoon hours on day 30, in the afternoon hours of days 60 and 90 of lactation, as well as in the afternoon on day 90 of lactation during the spring period of investigations. During the summer period, there were no statistically significant differences between the pH value determined in the morning and afternoon hours on day 30 of lactation, while the pH value was significantly higher in the afternoon hours than in the morning hours on days 60 and 90 of lactation. There were no significant differences between the average values for glucose during the spring period of investigations. During the summer, the average afternoon values for glucose on days 60 and 90 of lactation were significantly lower against the morning values. Glucose concentration measured on day 90 was statistically significantly lower than those for days 30 and 60 of lactation, both in the morning and in the afternoon. Glucose concentration on day 90 of lactation during the summer period was significantly lower against glucose concentration during the spring, both in the morning and in the afternoon hours. During the spring period, there was no significant correlation between blood glucemia and pH, while there was a negative correlation between the electrochemical reaction of blood and glucemia during the summer, but which was significant only in the afternoon hours. The decrease in glucemia in the afternoon hours of days 60 and 90 of lactation during the summer period can be explained by the strong influence of alkalosis on insulin secretion that leads to the increased utilization of glucose in peripheral tissues, which is why its concentration in blood is significantly decreased at that time. This is a form of the metabolism shifting under conditions of heat stress, when it uses glucose predominantly as a source of energy in the cells, as its oxidation releases significantly less heat energy in comparison with the combustion of other metabolites., Cilj ovog istraživanja je bio da se ispita uticaj toplotnog stresa na vrednosti glikemije i pH krvi kod visokomlečnih krava u ranoj fazi laktacije, kao i da se utvrdi da li su promene ovih parametara u takvim uslovima međusobno zavisne. Ogled je izveden na visokomlečnim kravama tokom leta i proleća. Odabrano je četrdeset krava, po dvadeset za oba perioda ispitivanja. Tokom ogleda računati su satni toplotni indeksi (THI) za ceo period ispitivanja, a zatim i prosečan dnevni THI, noćnojutarnji THI (prosečna vrednost satnih THI izmerenih u periodu od 22h prethodnog dana do 10h ujutro tekućeg dana), kao i dnevnovečernji THI (prosečna vrednost satnih THI izmerenih u periodu od 10 h do 22 h tekućeg dana). U uzorcima krvi uzetim ujutru i posle podne 30, 60. i 90. dana laktacije tokom prolećnog i letnjeg perioda ispitivanja određivan je pH i koncentracija glukoze. Na osnovu rezultata za THI utvrđeno je da životinje u prolećnom periodu ispitivanja nisu bile izložene delovanju izrazitog toplotnog stresa, dok su tokom leta bile periodič no izložene umerenom, ali i izrazitom toplotnom stresu, posebno u poslepodnevnim satima. Iz dobijenih rezultata za pH krvi se može zaključiti da su krave tokom leta bile u respiratornoj alkalozi 30. dana u jutarnjim i popodnevnim, a 60. i 90. dana laktacije u popodnevnim satima, kao i 90. dana laktacije posle podne tokom prolećnog perioda ispitivanja. Tokom leta nije bilo statistički značajne razlike između pH vrednosti određene u jutarnjim i popodnevnim satima 30. dana laktacije, dok je 60. i 90. dana laktacije popodnevna vrednost za pH bila značajno veća u odnosu na jutarnju. Nije bilo značajnih razlika između prosečnih vrednosti glikemija tokom prolećnog perioda ispitivanja. Tokom leta prosečne popodnevne vrednosti glikemija 60. i 90. dana laktacije bile su značajno niže u odnosu na jutarnje. Glikemije izmerene 90. dana bile su statistički značajno niže od glikemija 30. i 60. dana laktacije, kako jutarnje tako i poslepodnevne. Glikemija je 90. dana laktacije u letnjem periodu bila značajno niža u odnosu na glikemiju tokom proleća, kako u jutarnjim, tako i u popodnevnim satima. Tokom proleć nog perioda nije bilo značajne korelacije između glikemije i pH krvi, dok je tokom leta postojala negativna korelacija između elektrohemijske reakcije krvi i glikemije, a koja je bila značajna samo u popodnevnim satima. Smanjenje glikemije u popodnevnim satima 60. i 90. dana laktacije u letnjem periodu može se objasniti snažnim uticajem alkaloze na lučenje insulina, što dovodi do povećanog iskorišćavanja glukoze u perifernim tkivima, zbog čega se njena koncentracija u krvi tada značajno smanjuje. To je vid prestrojavanja metabolizma u uslovima toplotnog stresa kada organizam prevashodno koristi glukozu kao izvor energije u ćelijama jer se njenom oksidacijom oslobađa značajno manje toplotne energije u odnosu na sagorevanje drugih metabolita.",
publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd",
journal = "Veterinarski Glasnik",
title = "Glucose concentration and blood acid-basis status in high-yielding dairy cows during heat stress, Koncentracija glukoze i acido-bazni status krvi visokomlečnih krava u uslovima toplotnog stresa",
volume = "65",
number = "5-6",
pages = "297-312",
doi = "10.2298/VETGL1106297V"
}

Vujanac, I., Kirovski, D., Šamanc, H., Prodanović, R., Adamović, M.,& Ignjatović, M.. (2011). Glucose concentration and blood acid-basis status in high-yielding dairy cows during heat stress. in Veterinarski Glasnik
Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 65(5-6), 297-312.
https://doi.org/10.2298/VETGL1106297V

Vujanac I, Kirovski D, Šamanc H, Prodanović R, Adamović M, Ignjatović M. Glucose concentration and blood acid-basis status in high-yielding dairy cows during heat stress. in Veterinarski Glasnik. 2011;65(5-6):297-312.
doi:10.2298/VETGL1106297V .

Vujanac, Ivan, Kirovski, Danijela, Šamanc, Horea, Prodanović, Radiša, Adamović, Milan, Ignjatović, Marija, "Glucose concentration and blood acid-basis status in high-yielding dairy cows during heat stress" in Veterinarski Glasnik, 65, no. 5-6 (2011):297-312,
https://doi.org/10.2298/VETGL1106297V . .