CIDR与GnRH诱导同期发情效果比较  

Comparison of the Effect on CIDR and GNRH Inducing Estrus Synchronization

作　　者：韩志强[1] 乔丽霞 张洪涛[1] 孙晓玉[1] 刘光前[1] 梁坤[3] 

机构地区：[1]黑龙江省农垦科学院畜牧兽医研究所,黑龙江哈尔滨150038 [2]哈尔滨瀚邦医疗科技有限公司,黑龙江哈尔滨150028 [3]黑龙江省家畜胚胎移植技术开发中心,黑龙江尚志150600

出　　处：《中国牛业科学》2010年第1期38-39,共2页China Cattle Science

基　　金：黑龙江省科技厅攻关项目"中美合作提高黑龙江省奶牛场综合生产水平"资助项目(GB07B202)

摘　　要：[目的]为了观察CIDR与GnRH诱导同期发情的效果。[方法]本实验利用GnRH+PG+GnRH和CIDR+EB+P4+PG对荷斯坦奶牛进行同期发情。CIDR组:在奶牛发情周期的任意一天(发情当天除外),于奶牛阴道内放CIDR同时肌注2 mg EB和50 mg P4,人为诱导卵泡的发生,在放入CIDR的第8 d肌注PG;应用GnRH组与CIDR组同步进行同期发情处理:肌注GnRH 7 d后肌注PG,2 d后再次肌注GnRH。[结果]表明:利用CIDR与Gn-RH两种同期方法同期发情率、情期受胎率差异均不显著。[结论]在实际生产中,GnRH便于操作,且发情略高于CIDR组。[Objective]This experiment was to investigate effect of the estrus synchronization induced by CIDR and GnRH. [Method]The GnRH ＋PG＋GNRH and CIDR＋EBq-P4＋PG were used to induce the Estrus Synchronization of Holstein. For the CIDR group： In order to induce the ovarian follicle occurrence, CIDR was put in the vagina of the dairy cattle at any day of the estrus cycle （not the day of estrus） with 2 mgEB and 50 mg P4 intramuscular injection at the same time. After the eighth day of intramuscular injection, CIDR was put again. GnRH group and CIDR group were to induce the synchronous estrus pro- cessing at the same time： muscle injecting PG after seven days of injecting GnRH. Two days later, muscle injecting GnRH again. [Result]The estrus synchronization rate and pregnancy rate of estrus had no significant difference. [Conclusion]GnRH was easy to operate in practice and the estrus synchronization rate was a little bit higher than CIDR.

关 键 词：CIDR GNRH 同期发情 奶牛 

分 类 号：S823.3[农业科学—畜牧学]