乏情季节诱导山羊同期发情的研究  

The preliminary study on the iuduction synchronization of estrus at goat during its anoestrus

作　　者：赵永聚[1] 张家骅[1] 黄勇富 宋代军[1] 刘伯云 

机构地区：[1]西南农业大学动物科技学院,重庆北碚400716 [2]重庆市畜牧科学研究所 [3]云阳畜牧局

出　　处：《中国草食动物》2003年第5期9-11,共3页China Herbivores

基　　金："十五"国家科技攻关子项目--"草业和草食畜牧业生态经济系统建设关键技术研究与示范"研究内容之一

摘　　要：通过对云阳县栖霞乡放牧 +舍饲条件下的经产母羊 3组 (A组 40只、B组 3 1只、C组 18只 )共 89只分别用孕激素阴道栓同期发情处理 10天 ,其中A组取栓后直接观察发情情况、B和C组取栓后分别注射PGF2α 0 0 5mg/只和 0 1mg/只。结果表明 :A组 2～ 4天内同期发情率为 42 5 0 % ;B组同期发情率为 67 74% ,48小时有羊只发情高峰 ;C组同期发情率为83 3 3 %。取栓至开始发情时间A组明显长于B组和C组 (P <0 0 5 ) ;平均发情持续时间短于B、C组 (P <0 0 1,P <0 0 5 ) ,B、C组之间差异不显著 (P >0 0 5 )。The Group A only treated by PRID,whereas G roup B,C were treated with further injection of 0 05 mg and 0 1 mgPGF2α respe ctively.The results presented that 42 5%(17/40)、67 74%(21/31)、83 33%(1 5/18)does were observed estrus of the three groups during 2 to 4 days after rem oved sponges.Group A was longer than Group B and C (P<0 05),whereas there w as no difference between Group B and C(P>0 05).The estrus d uration were 24 00 h±9 07 h,40 29 h±3 90 h and 36 00 h±6 00 h.Group A w as shorter than Group B and C(P<0 05 or P<0 01),whereas there was no d ifference between Group B and C(P>0 05).

关 键 词：乏情季节 发情诱导 山羊 同期发情 放牧 舍饲条件 孕激素 阴道栓 

分 类 号：S827[农业科学—畜牧学]