高寒牧区柯尔克孜羊同期发情和人工授精试验  

Experiment on Estrus Synchronization and Artificial Insemination of Kirgiz Sheep in Alpine Pastoral Region

作　　者：依斯拉穆.麦麦提吐尔逊 高庆华[1] 买尔旦.依米提 

机构地区：[1]新疆塔里木大学动物科学学院,新疆阿拉尔843300

出　　处：《草食家畜》2016年第1期11-14,共4页Grass-Feeding Livestock

基　　金：环塔里木盆地特色畜禽高效繁育与遗传资源保护利用研究(TDZKCX201201)

摘　　要：为了提高柯尔克孜羊的繁殖率,本试验选择处于繁殖季节的600只柯尔克孜羊,随机分为试验组和对照组,试验组母羊采用一次PG方法处理;对照组为母羊自然发情,不做任何处理。观察第一情期的发情情况和发情后卵巢状态,统计同期发情率、受胎率和产羔率。结果显示:试验组同期发情率60%(120/200)显著高于对照组20%(80/400),差异显著(P<0.05)。试验和对照组处理后发情羊的卵巢状态相同,试验组和对照组受胎率分别为75%和78.7%,差异均不显著(P>0.05),产羔率分别为94.4%和95.2%,差异均不显著(P>0.05)结论:通过在高寒牧区使用一次PG法对处于繁殖季节的柯尔克孜羊进行处理不仅达到促进母羊发情同期化程度、集中进行人工授精的目的,而且取得了预期的同期发情率、受胎率及产羔率,值得广泛推广。To increase the reproduction rate of Kirghiz sheep, 600 Kirghiz sheep in reproduction season were selected and divided into two groups of experiment and comparison, the sheep in the experiment group are treated through pregnancy (PG) with one time, while another group are natural estrus with no any treatments. By observing the oestrus in the first season and the status of ovary after oestrus, and counting the rates of synchronous estrus, pregnancy and reproduction, it is showed that the synchronous estrus rate in the experimental group is 60%(120/200) that is obviously higher than the one in comparison group that is 20%(80/400), and the difference is significantly (P<0.05). The ovary status of estrus sheep after treatment is same in experiment and comparison group, the pregnancy rate is 75% and 78.7% respectively in experiment and comparison group, and the difference is not obvious (P>0.05), so is the one of reproduction rate that is 94.4%and 85.2% respectively. It is concluded that PG with one time for Kirgiz sheep in reproduction season in Alpine Pastoral region improves the level of sheep estrous synchronization and achieves the purpose of intensive artificial insemination, but reaches the expected rates of synchronous estrus, pregnancy and reproduction, so such method is worthy of widespread.

关 键 词：繁殖季节 柯尔克孜羊 高寒牧区 同期发情率 受胎率 

分 类 号：S826[农业科学—畜牧学]