黑安格斯母牛同期发情与受胎效果研究

Study on Increase the Pregnancy Rate by Estrus Synchronization for Black Angus Cattle

宁夏泾源县2016年从澳大利亚引进的黑安格斯母牛群中,部分母牛不发情或发情不明显,导致长期不孕。2017年2-6月期间,对上述母牛进行了同期发情处理和冻配。同期发情方法为氯前列烯醇法和氯前列烯醇戈那瑞林法2种,结果表明,氯前列烯醇法(n=114)的同期发情率为82.42%,情期受胎率为78.72%,后者(n=267)的同期发情率为87.64%,情期受胎率为81.62%。氯前列烯醇戈那瑞林法的同期发情率和情期受胎率均高于氯前列烯醇法。本次试验不仅试验示范应用了规模化肉牛群的同期发情技术,而且解决了大量繁殖母牛的不孕难题,效果显著。

The study had used two synchronous estrus methods （ICI and ICI＋GnRH） to treat black Angus cattle which were not pregnant. The results showed that the rate of estrus synchronization was 82. 42% and the rate of pregnancy was 78.72% for IC1. And for ICI＋GnRH were 87.64% and 81.62% respectively. The technology for estrus synchronization could reduce the number of sterile cows and increase the pregnancy.