马绒毛膜促性腺激素对豫丰黄兔繁殖性能的影响

Effect of Horse Chorionic Gonadotrophin on the Reproductive Performance of Yufeng Yellow Rabbit

为研究马绒毛膜促性腺激素对豫丰黄兔繁殖性能的影响,选择河南省地方优良品种豫丰黄兔初配母兔150只,平均分为5个试验组,采用标准化笼具饲养,人工授精、频密繁殖(繁殖周期为42d);每组在人工授精前48h对母兔分别注射20、30、40、50、0IU剂量的马绒毛膜促性腺激素(eCG),研究其对母兔同期发情及繁殖效果的影响,试验进行4个周期,共539次人工授精。结果表明,20、30、40、50IU的eCG均可显著提高豫丰黄兔产仔率,20IU和30IU的产仔率显著高于40IU和50IU的;30IU组活窝重显著高于20IU组和对照组;40IU组仔兔个体提质量显著低于20、30IU组和对照组。分析表明,eCG 30IU组综合表现最佳;在生产实际中使用eCG对母兔进行同期发情处理,20、30IU较40、50IU对豫丰黄兔母兔产仔率具有更好的提高作用。

To study the effect of horse chorionic gonadotrophin （eCG） on female rabbits＇ estrous synchronization and reproductive performance, a total of 150 female rabbits of first mating were chose from local good Yufeng yellow rabbit in Henan province and equally divided into 5 groups. The experiment was performed by standard breeding of cage ,artificial insemination, and frequent reproduction （breeding cycle for 42 days）. At 48 h before artificial insemination,each group of fe- male rabbits was injected with eCG of the doses of 0,20,30,40,or 50 IU. Tests were carried out for four cycles and 539 times of artificial insemination. The results showed that that all of the dif- ferent doses can significantly improve the reproductivity of Yufeng yellow rabbit. The reproduc- tivity of the group injected with 30 IU of eCG are higher than that of 20 IU group,which is signi- ficantly higher than all the 40 IU, 50 IU,and negative control groups. This indicates that the usage of 30 IU eCG is most helpful for improving the reproductivity of Yufeng yellow rabbit.