Pregled bibliografske jedinice broj: 420385
Pre-ovulatory LH Peak and Time of Ovulation in Nulliparous and Primiparous Goats after Male Effect
Pre-ovulatory LH Peak and Time of Ovulation in Nulliparous and Primiparous Goats after Male Effect // Proceedings - Reproduction in Domestic Animals
Utrecht, Nizozemska, 2008. str. 75-75 (poster, međunarodna recenzija, sažetak, znanstveni)
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Naslov
Pre-ovulatory LH Peak and Time of Ovulation in Nulliparous and Primiparous Goats after Male Effect
Autori
Simoes, J. ; Baril, Gerard ; Cunha, T. ; Azevedo, J. ; Mascarenhas, Ramiro
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Proceedings - Reproduction in Domestic Animals
/ - , 2008, 75-75
Skup
12th Annual Conference of the European Society for Domestic Animal Reproduction
Mjesto i datum
Utrecht, Nizozemska, 20.11.2008. - 23.11.2008
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
pre-ovulatory; LH peak; ovulation; goats; male effect
Sažetak
The aim of the present study was to determine the time of preovulatory LH peak and ovulation in anoestrous goats, after stimulation by male effect. 7 nulliparous and 8 primiparous goats were isolated from bucks during the nonbreeding season. Anoestrus was confirmed by low circulating progesterone values. A 6-day progestagen treatment was given to synchronize oestrus in early May. Vaginal sponges were removed at the time of buck introduction (BI). Plasma LH was determined every 4h, through 24h after onset of oestrus and total number of ovulations were detected by transrectal ultrasonography, every 8h, until 44h. Nulliparous and primiparous goats were similar for the interval between BI and onset of oestrus (50, 6 vs 45, 6h) , preovulatory LH peak (54, 9 vs 55.5 h) or ovulation (77, 7 vs 78, 3h). However, the interval between the onset of oestrus and preovulatory LH peak was smaller in nulliparous (4, 3h) than in primiparous (10, 5h) goats. The interval between the onset of oestrus and ovulation was also lower in nulliparous (27.1h) than primiparous (33, 3h) goats. The interval between preovulatory LH peak and ovulation was similar between nulliparous (22, 9h) and primiparous goats(22, 8h). In conclusion, these results showed thast nulliparous ovulate, in average, early than primiparous goats regarding the onset of oestrus.
Izvorni jezik
Engleski
Znanstvena područja
Veterinarska medicina
POVEZANOST RADA
Projekti:
053-0000000-3645 - Optimizacija superovulacije i krioprezervacija kozjih zametaka (Grizelj, Juraj, MZOS ) ( CroRIS)
Ustanove:
Veterinarski fakultet, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
- MEDLINE
