不同超数排卵方法对天祝白牦牛超排效果的影响

为探索天祝白牦牛超数排卵的有效方法,选择54头纯种天祝白牦牛,利用国产促卵泡素(FSH)和进口FSH分别等量法和减量法进行超数排卵处理,比较其超数排卵效果。结果显示,应用等量法注射国产FSH超排的有效率为40%,减量注射法超数排卵的总有效率为50%;等量法和减量法注射进口FSH的超排有效率均为50%;使用大剂量FSH进行超排处理的有效率为50%;而应用FSH重复进行超数排卵处理的有效率为67%。结果表明,国产FSH与进口FSH在处理供体白牦牛进行超数排卵时,其效果差异不显著(P＞0.05),等量注射法和减量注射法对超排效果也无显著影响(P＞0.05)。在同等条件下,使用大剂量的FSH对供体进行超数排卵,其有效率与使用正常剂量FSH处理的有效率没有显著差异(P＞0.05),但重复超数排卵处理的效果显著高于一次处理的效果(P＜0.05),平均每头牛的排卵数也明显高于其他试验组。

Studies on the Effects of Different Methods of Superovulation in Tianzhu White Yak

In order to find an efficient way of superovulation in Tianzhu White yak,the experiments were designed to compare different ways of superovulation.The results showed that the percentages of superovulation using equal and degressive dosage of FSH made in China were 40% and 50% respectively.And those of FSH made in Canada were both 50%.The percentages of high dosage of FSH and repeated superovulation treatment were 50% and 67% respectively.The results suggested that the efficiency of whether using FSH made in China or in Canada was not different significantly.And different way of injection of FSH also got the same results.The percentages of superovulation between high dosage and ordinary dosage of FSH were not different,but that of the repeated treatment was higher dramatically than that of single treatment.