不同处理方法对海南黑山羊同期发情效果和繁殖性能的影响

Effects of Different Processing Methods on Estrus Synchronization and Reproductive Performance of Hainan Black Goats

为探讨不同处理方法对海南黑山羊同期发情效果和繁殖性能的影响。随机选取海南省某规模化养羊场的120头(35~50)kg海南黑山羊,分为2次注射氯前列烯醇(PG)法、孕酮阴道栓(CIDR)+孕马血清促性腺激素(PMSG)二联法、CIDR+PMSG+PG三联法3种不同的处理方法,诱导发情试验结束后,分别观察3组羊的发情情况和繁殖性能。结果显示,3组试验羊的同期发情率差异显著,且试验组C海南黑山羊同期发情率显著高于试验组A和试验组B(P<0.05);试验组A母羊发情时间主要集中在48~72 h,试验组B和试验组C母羊发情时间主要集中在24~48 h;试验组C母羊的受胎率和产羔率均显著高于试验组A和试验组B(P<0.05);待分娩后,3组试验母羊初生的羔羊平均初生重差异不显著(P>0.05)。结果表明,应用CIDR+PMSG+PG三联法处理方法能够显著提高海南黑山羊同期发情效果和繁殖性能,为今后提高海南黑山羊同期发情效果和繁殖性能提供了参考依据。

To explore the effects of different treatment methods on the estrus synchronization and reproductive performance of Hainan black goats.A total of 120 Hainan black goats(30-50 kg)were randomly selected from a large-scale sheep farm of Hainan Province,and they were divided into three different treatment methods:two injections of PG method,CIDR+PMSG dual method,and CIDR+PMSG+PG triple method.After the induction of estrus experiment,the estrus and reproductive performance of the three groups of sheep were observed.The results showed that there was a significant difference in the synchronous estrus rate among the three experimental groups of sheep,and the synchronous estrus rate of Hainan black goats in experimental group C was significantly higher than that of experimental group A and experimental group B(P<0.05);the estrus time of ewes in experimental group A was mainly concentrated during 48-72 hours,while the estrus time of ewes in experimental groups B and C was mainly concentrated during 24-48 hours;the conception rate and lambing rate of experimental group C ewes were significantly higher than those of experimental group A and experimental group B(P<0.05);after delivery,there was no significant difference(P>0.05)in the average birth weight of lambs born to the three experimental ewes.The results showed that the application of CIDR+PMSG+PG triple treatment method could significantly improve the synchronous estrus and reproductive performance of Hainan black goats,which will provide a reference basis for improving the synchronous estrus and reproductive performance of Hainan black goats in the future.