摘要
本研究用氯前列烯醇分别对青海大通牦牛(n=12)两次注射;对天祝白牦牛(n=17)和天祝黑牦牛(n=21)一次注射进行同期发情处理。三批处理结果为,一次注射后的发情率分别为:青海大通牦牛(9/12),75.0%;天祝白牦牛(10/17),58.8%;天祝黑牦牛(12/21),57.1%;平均一次性注射发情率为(31/50)62.0%。青海大通牦牛在第二次注射后的发情率为(12/12)100%,注射后发情的时间分别为:24h内发情的占8.0%、24～36h的占20.0%、36～48h的占30.0%、48～60h的占4.0%、60～72h的占0%。结果表明:氯前列烯醇对繁殖季节牦牛进行同期发情处理效果明显,二次注射处理后的发情率高于一次注射,处理后牦牛发情时间集中24～48h之间。
Efficiency of Oestrous synchronization that treated with Cloprostenol was studied in Qinghai Da tong yak(n=12) in twice injection and Tianzhu White yak(n=17) and Tianzhu Black yak(n=21) in once injection. The results indicated that the oestrous rate is 75.0% in Datong yak, 58.8% in Tianzhu White yak, and 57.1% in Tianzhu Black yak after once injection. the average oestrous rate is 62.0%, in once injection and 100% in twice injection. The oestrous period was mainly between 24 and 48 hours after injection, the oestrus rate of this period is about 58.0% in total. The results showed that Oestrous synchronization brought about a significant effect in yak treated with Cloprostenol, twice injection had better results than once injection, The time of oestrous was mainly between 24 and 48 hours after injection.
出处
《黄牛杂志》
2004年第2期7-9,共3页
Journal of Yellow Cattle Science
基金
国家民委重点科研项目资助
