Milk production in high-yielding dairy cows under different environment temperatures
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2012
Authors
Vujanac, IvanKirovski, Danijela
Šamanc, Horea
Prodanović, Radiša
Lakić, Nada
Adamović, M.
Valčić, Olivera
Article (Published version)
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Show full item recordAbstract
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 n...o 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.
Keywords:
Dairy cows / milk yield / temperature-humidity indexSource:
Large Animal Review, 2012, 18, 1, 31-36Publisher:
- Sivar-Soc Italiana Veterinari Animali Reddito, Cremona
Funding / projects:
- Development of technologies and products based on mineral raw materials and waste biomass for protection of natural resources for safe food production (RS-MESTD-Technological Development (TD or TR)-31003)
- Molecular genetic and ecophysiological researches on the protection of autochthonous animal genetic resources, sustaining domestic animals’ welfare, health and reproduction, and safe food production (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-46002)
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Fakultet veterinarske medicineTY - 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 .