供受体羊发情同期化程度对胚胎移植效果的影响

Effect of Different Estrus Synchronization of Donor andRecipient on the Survival Rate of Embryos

将2008枚鲜胚移植给1146只受体羊,移植单胚和双胚的受体总妊娠率为63.1%723/1146,移植胚胎成羔率为52.8%1061/2008。结果表明供、受体发情同步差在+1～+0.5d、0d和-0.5～-1d时,移植单胚的受体妊娠率和胚胎成羔率没有明显的差异P>0.05;移植双胚的受体差异显著P<0.05,同步差为0d时的胚胎移植效果最好。移植双胚的受体中,奶山羊受体与供体同步差为-0.5～-1d和0d时,胚胎成羔率显著高于同步差为+1～+0.5d的受体P<0.05;成都麻羊与供体同步差在+1～+0.5d、0d和-0.5～-1d时,其胚胎成羔率均有显著差异P<0.05;南江黄羊和大耳羊做受体时,供、受体同步差在+1～+0.5d、0d和-0.5～-1d时进行胚胎移植,胚胎成羔率无统计学差异。

Two thousands and eight Bo'er goat embryos were transplanted to 1146 recipients by single or double embryo transplant. The pregnancy rate was 63.1%(723/1146), and the rate of embryo developing to kids was 52.8%(1061/2008). The studies revealed that the transfer embryo efficiency were not significant difference while single embryo was transplanted per recipient(P>0.05), when the time differences of estrus synchronization between donor and recipient were +1～+0.5d?0d or -0.5～-1d, the efficiency were significant different with double embryos which were transplanted per recipient, the efficiency was best when the time difference was 0d. Among the recipients with two embryos were transplanted, the rate of embryo developing to kids was higher significant when the difference time was -0.5～-1d or 0d than the difference time was +1～+0.5d in the Milk goat recipients(P<0.05), there were significant difference among the different time of -0.5～-1d, 0d, or +1～+0.5d in the Ma goat recipients(P<0.05), and there were not significant difference among three different time in Big-ear goat and Nanjiang Yellow goat recipients(P>0.05).