Plasma thyroxine and triiodothyronine levels after synchronization of estrus in the breeding season in ewes
Koncentracija tiroksina i trijodtironina u krvnoj plazmi ovaca posle sinhronizacije estrusa u sezoni parenja
Apstrakt
Twenty nonpregnant cycling Tsigai ewes in the breeding season were treated for synchronization of estrus using intravaginal progestagen sponges (medroxyprogesterone-acetate, MAP) followed by an intramuscular injection of 350-400 IU of pregnant mare serum gonadotrophin (PMSG). A control group of ewes was formed from 20 animals in the natural estrous cycle. Hormonal status was investigated by determination of plasma triiodothyronine (T3) and thyroxine (T4) concentrations using radioimmunoassay (RIA). Samples of jugular venous plasma were collected on the day of sponge insertion (P), the day of estrus (0. day), 7, 14 and 18 days after estrus. Plasma T3 levels in the control group of ewes were significantly lower compared to the ewes after synchronization of estrus, except the level of T3 on day 18 after estrus. Plasma T4 level was not significantly different in the treated and control ewes, except on day 18 after estrus.
Ispitivanja hormonalnog statusa ovaca nakon sinhronizacije estrusa u sezoni parenja vršena su određivanjem nivoa T3 (trijodtironina) i T4 (tiroksina) u krvnoj plazmi radioimunološkom (RIA) metodom. Uzorci krvne plazme su prikupljani na dan stavljanja sunđera (P), dan estrusa (0. dan), 7, 14. i 18. dana od estrusa. Nivo T3 u krvnoj plazmi kontrolne grupe ovaca u prirodnom estrusnom ciklusu je značajno niži u odnosu na tretirane životinje, osim nivoa T3 18. dana posle estrusa. Nivo T4 nije se značajno razlikovao između tretiranih ovaca i kontrolne grupe, izuzev 18 dana ispitivanja, kada je ustanovljen značajno veći nivo kod tretiranih gravidnih ovaca.
Ključne reči:
estrous season / ewes / progestagen / thyroxine / triiodothyronineIzvor:
Acta Veterinaria-Beograd, 2001, 51, 1, 9-14Izdavač:
- Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd
Kolekcije
Institucija/grupa
Fakultet veterinarske medicineTY - JOUR AU - Gvozdić, Dragan AU - Stojić, Velibor PY - 2001 UR - https://vet-erinar.vet.bg.ac.rs/handle/123456789/168 AB - Twenty nonpregnant cycling Tsigai ewes in the breeding season were treated for synchronization of estrus using intravaginal progestagen sponges (medroxyprogesterone-acetate, MAP) followed by an intramuscular injection of 350-400 IU of pregnant mare serum gonadotrophin (PMSG). A control group of ewes was formed from 20 animals in the natural estrous cycle. Hormonal status was investigated by determination of plasma triiodothyronine (T3) and thyroxine (T4) concentrations using radioimmunoassay (RIA). Samples of jugular venous plasma were collected on the day of sponge insertion (P), the day of estrus (0. day), 7, 14 and 18 days after estrus. Plasma T3 levels in the control group of ewes were significantly lower compared to the ewes after synchronization of estrus, except the level of T3 on day 18 after estrus. Plasma T4 level was not significantly different in the treated and control ewes, except on day 18 after estrus. AB - Ispitivanja hormonalnog statusa ovaca nakon sinhronizacije estrusa u sezoni parenja vršena su određivanjem nivoa T3 (trijodtironina) i T4 (tiroksina) u krvnoj plazmi radioimunološkom (RIA) metodom. Uzorci krvne plazme su prikupljani na dan stavljanja sunđera (P), dan estrusa (0. dan), 7, 14. i 18. dana od estrusa. Nivo T3 u krvnoj plazmi kontrolne grupe ovaca u prirodnom estrusnom ciklusu je značajno niži u odnosu na tretirane životinje, osim nivoa T3 18. dana posle estrusa. Nivo T4 nije se značajno razlikovao između tretiranih ovaca i kontrolne grupe, izuzev 18 dana ispitivanja, kada je ustanovljen značajno veći nivo kod tretiranih gravidnih ovaca. PB - Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd T2 - Acta Veterinaria-Beograd T1 - Plasma thyroxine and triiodothyronine levels after synchronization of estrus in the breeding season in ewes T1 - Koncentracija tiroksina i trijodtironina u krvnoj plazmi ovaca posle sinhronizacije estrusa u sezoni parenja VL - 51 IS - 1 SP - 9 EP - 14 UR - https://hdl.handle.net/21.15107/rcub_veterinar_168 ER -
@article{ author = "Gvozdić, Dragan and Stojić, Velibor", year = "2001", abstract = "Twenty nonpregnant cycling Tsigai ewes in the breeding season were treated for synchronization of estrus using intravaginal progestagen sponges (medroxyprogesterone-acetate, MAP) followed by an intramuscular injection of 350-400 IU of pregnant mare serum gonadotrophin (PMSG). A control group of ewes was formed from 20 animals in the natural estrous cycle. Hormonal status was investigated by determination of plasma triiodothyronine (T3) and thyroxine (T4) concentrations using radioimmunoassay (RIA). Samples of jugular venous plasma were collected on the day of sponge insertion (P), the day of estrus (0. day), 7, 14 and 18 days after estrus. Plasma T3 levels in the control group of ewes were significantly lower compared to the ewes after synchronization of estrus, except the level of T3 on day 18 after estrus. Plasma T4 level was not significantly different in the treated and control ewes, except on day 18 after estrus., Ispitivanja hormonalnog statusa ovaca nakon sinhronizacije estrusa u sezoni parenja vršena su određivanjem nivoa T3 (trijodtironina) i T4 (tiroksina) u krvnoj plazmi radioimunološkom (RIA) metodom. Uzorci krvne plazme su prikupljani na dan stavljanja sunđera (P), dan estrusa (0. dan), 7, 14. i 18. dana od estrusa. Nivo T3 u krvnoj plazmi kontrolne grupe ovaca u prirodnom estrusnom ciklusu je značajno niži u odnosu na tretirane životinje, osim nivoa T3 18. dana posle estrusa. Nivo T4 nije se značajno razlikovao između tretiranih ovaca i kontrolne grupe, izuzev 18 dana ispitivanja, kada je ustanovljen značajno veći nivo kod tretiranih gravidnih ovaca.", publisher = "Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd", journal = "Acta Veterinaria-Beograd", title = "Plasma thyroxine and triiodothyronine levels after synchronization of estrus in the breeding season in ewes, Koncentracija tiroksina i trijodtironina u krvnoj plazmi ovaca posle sinhronizacije estrusa u sezoni parenja", volume = "51", number = "1", pages = "9-14", url = "https://hdl.handle.net/21.15107/rcub_veterinar_168" }
Gvozdić, D.,& Stojić, V.. (2001). Plasma thyroxine and triiodothyronine levels after synchronization of estrus in the breeding season in ewes. in Acta Veterinaria-Beograd Univerzitet u Beogradu - Fakultet veterinarske medicine, Beograd., 51(1), 9-14. https://hdl.handle.net/21.15107/rcub_veterinar_168
Gvozdić D, Stojić V. Plasma thyroxine and triiodothyronine levels after synchronization of estrus in the breeding season in ewes. in Acta Veterinaria-Beograd. 2001;51(1):9-14. https://hdl.handle.net/21.15107/rcub_veterinar_168 .
Gvozdić, Dragan, Stojić, Velibor, "Plasma thyroxine and triiodothyronine levels after synchronization of estrus in the breeding season in ewes" in Acta Veterinaria-Beograd, 51, no. 1 (2001):9-14, https://hdl.handle.net/21.15107/rcub_veterinar_168 .