放牧条件下哈萨克羊非繁殖季节诱导发情试验研究

Study on Estrus Induction on Kazak sheep in Non-breeding Season under grazing condition

为了探讨两种诱导发情处理方法对非繁殖季节放牧条件下的哈萨克羊实施诱导发情的可能性和效果,在新疆塔城市三个牧场上,以经产哈萨克母羊为试验对象,验证孕激素阴道栓和二次前列烯醇两种处理方法诱导发情的可能性和实际效果。结果显示:孕激素阴道栓和二次前列烯醇两种处理方案诱导哈萨克母羊发情率分别达到84.77%和61.44%,差异显著(P<0.05)。两种方案下的哈萨克母羊的配种率为69.53%和46.18%,差异不显著(P>0.05)。结果表明孕激素阴道栓和二次前列烯醇两种处理方案都能诱导哈萨克母羊发情,其中孕激素阴道栓处理方案的效果较好,在牧区具有推广价值,并有助于建立哈萨克羊的两年三产高频繁育体系。

In order to explore the possibility and effects of two kinds of estrus induction pro- cessing method in the non breeding season under grazing conditions on Kazak sheep, in three pas- ture in Xinjiang Tacheng City, Kazak sheep were estrus induced by progesterone vaginal supposito- ry or two injections of cloprostenol method. The fficiency of this two method was investigated. was investigated. Results showed that estrus induction rate of progesterone vaginal suppository was 84.77%, significantly higher than cloprostenol induced group（61.44%）（P〈O. 05）. Conception rate was 82.03% vs 75.17% for each group respectively（P〉0. 05）. These results indicated that progester- one vaginal suppository method and cloprostenol injection method both can induce Kazakh ewes go in rut, while progesterone vaginal suppository treatment is better. It suggests that these meth- ods has the value of popularization in the pastoral areas, and are helpful for establishment of three births in two years in Kazak sheepbreeding system.