受体因素对萨福克羊鲜胚及杜泊羊冻胚移植效果的影响

Effects of Recipient Factors on Fresh Suffolk Embryos and Frozen-thawed Dorper Embryos Transfer

文章分析了新疆地区一次萨福克羊鲜胚及杜泊羊冻胚的移植实验数据,旨在讨论受体因素对胚胎移植效果的影响。结果表明:受体羊在发情后7 d时移植胚胎,杜泊羊冻胚桑椹胚移植后产羔率显著高于囊胚(P<0.05)。萨福克羊鲜胚移植时胚胎发育阶段及移植数量对移植后产羔率无显著影响(P>0.05)。受体母羊先前手术次数对萨福克羊鲜胚移植后产羔率有显著影响(P<0.05),手术2次及以上次数的母羊产羔率极显著低于初次胚胎移植的母羊(P<0.01)。受体母羊卵巢黄体数超过1个后,黄体数对产羔率无显著影响(P>0.05)。

In this paper,the data of an experiment on fresh Suffolk and frozen Dorper embryos transfer in Xinjiang were analyzed retrospectively, and the effect of recipient factors on embryos transfer was discussed. The results demonstrated that when embryos were transferred to the recipient ewes on the 7 th day after estrus,the lambing rate of frozen Dorper embryos which were in morula stage was significantly higher than those in blastocyst stage after transfer. Under this experimental condition,there was no significant effect on the lambing rate between the different groups divided by the developmental stage or the quantity of fresh Suffolk embryo transferred. The number of previous surgical operations of the recipient sheep had significant effects on the lambing rate of fresh Suffolk embryos transferred,and the lambing rate of the recipients which had surgical operations more than once was significantly lower than those which had no operation experience. When the corpus luteum in the ovaries of the recipients was above one, the number of ovarian corpus lutea had no significant effects on the lambing rate