摘要
利用诱导发情、同期排卵的原理,根据既定的程序化处理程序,对当雄牦牛进行诱导发情,便于大批量人工授精,最终使放牧牦牛达到"四集中":集中发情、集中配种、集中妊娠和集中分娩。试验累计处理6 935头母牦牛,结果:同期发情率平均能达到94.82%,比自然发情率(35%)高近六十个百分点。受胎率平均为63.34%,比自然发情的受胎率(28.6%)高34.74%。犊牛成活率平均能达到98.49%,比自然交配犊牛成活率低1.51%。
The principles of induced estrus and OvSynch were carried out, according to the designed procedure to induce yaks into estrus in order to do artificial insemination in bunches, and finally made grazing yaks achieved ＂four concentrations＂, including estrus, mating, pregnancy and parturition. Totally 6935 heads of female yaks were disposed in this test, the results showed that： the average of estrus synchronization rate reached to 94.82%, which was nearly 60 percentage points higher than naturel estrus rate （35%）; the average of conception rate was 63.34%, which was 34.74% higher than natural estrus＇s （28.6%）; the survival rate of calves reached to 98.49% on average, which was lower 1.51% than calves born by natural mating.
出处
《草业与畜牧》
2015年第5期46-49,共4页
Pruataculture & Animal Husbandry
关键词
牦牛
程序化人工授精
试验
效果观察
Yak
Procedural artificial insemination
Test
Effect observation
