季节对山羊同期发情处理效果的影响  

A STUDY OF SEASONAL EFFECT ON SYNCHRONIZATION OF ESTRUS USING CIDR IN GOAT

作　　者：赵永聚[1] 孙新明[1] 李跃民[1] 张家骅[1] 

机构地区：[1]西南农业大学动物科技学院

出　　处：《西南农业大学学报（自然科学版）》2004年第6期759-761,共3页Journal of Southwest Agricultural University

基　　金：国家"十五"科技攻关子项目资助---"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(2001BA604)"研究内容之一

摘　　要：将316只经产空怀母羊分成4组,分别在春季、夏季、秋季和冬季用孕激素阴道栓结合前列腺素和垂体促滤泡素进行同期发情处理,并在发情结束后剖检部分山羊检查卵巢排卵点与黄体情况。结果表明:处理羊只的发情率以秋季最高,为94.74%;与春、夏、冬季相比差异极显著(P<0.01);以夏季发情率最低,仅为59.55%;春季和冬季发情率分别为72.57%和78.95%,处于中等。山羊剖检结果表明春、夏、秋和冬季分别有4只、4只、14只和10只母羊有经排卵形成的1～2个排卵点(或新生黄体),分别占各季剖检山羊的80.00%,80.00%,87.50%和83.33%。反映季节是影响山羊同期发情处理效果的一个重要因素。A total of 316 does were divided into 4 groups and treated with progesterone-containing intra-vaginal sponges for 10～14 days in combination with PGF_(2a) and FSH injection to synchronize their estrus in spring, summer, autumn and winter. Estrus was observed to occur in 94.47% of the treated does 2 to 4 days after sponge removal in autumn, in contrast of 59.55%, 72.57% and 78.95%, respectively, in summer, spring and winter, the difference being highly significant statistically (P<0.01). Anatomical examination of the ovary revealed that ovarian follicles ovulated or new corpus luteum emerged in 80.00% (4/5), 80.00%(4/5), 87.50% (14/16) and (83.33%) (10/12) of the treated does in spring, summer, autumn and winter, respectively.Thus indicating that season is an important factor affecting estrus synchronization treatments in goats.

关 键 词：山羊 季节 孕酮阴道栓 同期发情 

分 类 号：S827.34[农业科学—畜牧学]