超数排卵是绵羊胚胎移植技术中关键的环节。本试验以37只中国美利奴羊(新疆型)作为超排供体,进行超数排卵实验。系统地分析了不同来源激素、激素剂量、年龄、季节对中国美利奴羊(新疆型)的超数排卵效果的影响。试验结果表明:相同季节,150 IU FSH与100 IU LH联合应用效果比180 IU FSH与100 IU LH联合应用效果好(P<0.05)。相同剂量,宁波FSH超排所获得的平均黄体数和可用胚胎数均高于中国科学院FSH(P>0.05)。8～12月龄黄体平均数和可用胚胎率均低于13～24月龄可用胚胎率。采用相同来源FSH,并且剂量相同时,秋季超排处理所获得的平均黄体数、可用胚胎率均高于冬季(P>0.05)。

Superovulation and estrus synchronization are critical steps of embryo transfer technology in sheep.In this study,37 China Merino(Xinjiang type) were used as donors,140 Hu sheep as receptors,estrus synchronization and superovulation were treated in donors,data were analysed to determine the effect of the dose,different sources of hormones,age,season of superovulation in China Merino(Xinjiang type).The results showed that:duing the same season,150 IU FSH and 100 IU LH in combination is better than 180 IU FSH and 100 IU LH combined.The same dose,Ningbo FSH get higher average number of corpora lutea count and available embryos than the FSH of the Chinese Academy.the 24-month-old donors got morecorpora lutea count and embryoes than the 8-12 month-old;The same source FSH,and the same dose,get of the average number of corpus luteum and embryo the autumn are higher than the winter.