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优化胚胎移植受体牛同期发情技术方案的研究 被引量:2

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摘要 用C IDR+PGF2 a+HCG法的Ⅰ组和GnRH+PGF2 a+GnRH法的Ⅱ组对108头受体牛进行同期发情优化技术方案的研究,结果表明:在60 h内发情率分别为100%、96.92%,2种方法发情率都较高,Ⅰ组比Ⅱ组相对更高一些,但2种方法间差异不显著(P>0.05)。从发情时间分布上比较,22 h内,Ⅰ组发情率为96.92%,Ⅱ组发情率为72.09%,Ⅰ组(C IDR+PGF2 a+HCG法)发情同期化程度高于Ⅱ组,2种方法的发情同期化集中程度存在显著差异(P<0.05)。Ⅰ组方法在胚胎移植利用率和移植妊娠率高于Ⅱ组,但2组间差异不显著(P>0.05)。用Ⅰ组方法处理本地牛和杂交牛,其发情率均为100%,2个品种间差异不显著(P>0.05)。Ⅱ组方法处理本地牛和杂交牛,其发情率分别为91.67%、100%,杂交牛发情率稍高于本地牛,但2个品种间没有显著差异(P>0.05)。品种对受体发情率的影响不显著。因此,用C IDR+PGF2 a+HCG法对胚胎移植受体牛同期发情处理效果较好。
出处 《畜牧与兽医》 北大核心 2009年第4期44-46,共3页 Animal Husbandry & Veterinary Medicine
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