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.
Hainan black goatsimultaneous estrusreproductive performanceconception rate
NETL
NSTL
维普
万方数据
