高寒牧区放牧母牛同期发情试验效果分析

Effects of Estrus Synchronization on the Grazing Cow in Alpine Area

新疆伊犁州草原牧区畜牧业仍然以草地放牧方式为主,由于高寒牧区交通不便,影响了冷配技术推广利用。为了使放牧母牛在转入夏牧场以前进行同期发情、集中配种,提高冷配率,开展了本次试验。试验结果:同期发情处理的98头母牛撤栓后72 h内发情94头,同期发情率达到了96%,冷配情期怀胎头数38头,情期怀胎率达到38.78%,总怀胎数72头,总怀胎率达到了73.47%,取得了预期效果。

Grassland grazing is still predominated grassland animal husbandry in Yili, Xinjiang. Cold artificial insemination is largely affected by geographical inaccessibility in alpine pastoral areas. In order to improve cold artificial insemination, estrus synchronization and centralized breeding were conducted before the cows were transported to the alpine area. Results showed that 94 of 98 synchronized cows were heated within in72 h after withdrawing bolt with 96% of estrus synchronization rate. In addition, 38 cows got pregnant after AI with 38.78% of puberty pregnancy. The total number of pregnant was 72 with 73.47% of pregnancy rate.Together, these results showed that we achieved expected effects of synchronization.