牦牛高效繁殖技术生产安犏牛试验研究

Experimental study on the production of Angus-yak hybrid cattles by efficient breeding technology of yak

当年产犊牦牛采用“补饲+隔离断乳+生殖技术诱导”的高效繁殖技术,隔年产犊牦牛采用“补饲+生殖技术诱导”的高效繁殖技术,并采用安格斯肉牛细管冻精实施犏牛生产杂交试验,研究结果表明,采用牦牛高效繁育技术,与对照组相比,高效繁育组当年产犊母牦牛的发情率、受胎率、产犊率及犊牛成活率分别为67.50%、61.67%、56.67%和95.59%,分别提高38.33、35.83、35.83和11.59个百分点,差异极显著(P<0.01);采用牦牛高效繁育技术,与对照组相比,高效繁育组隔年产犊母牦牛的发情率、受胎率、产犊率及犊牛成活率分别为88.00%、83.00%、78.00%和96.16%,分别提高23.95%、25.76%、34.49%和7.25%,差异显著(P<0.05)。采用牦牛高效繁殖技术,显著提高当年产犊牦牛和隔年产犊牦牛的发情受胎效果,杂交后代犏犊牛的成活率也显著提高。

The annual yak calves is adopted by the supplementary feeding+isolation weaning+reproductive technology-induced,yak calves with every other year is supplemented with feeding+reproductive technology to induce estrus technology,and the Angus beef cattle thin tube frozen sperm is used for producing hybrid of cattle and yak.The results showed that compared with the control group,the estrus rate,conception rate,calving rate and calf survival rate of the high-yielding breeding group were 67.50%,61.67%,56.67%and 95.59%respectively,and increased by percentage points of 38.33,35.83,35.83 and 11.59 respectively,the difference was extremely significant(P<0.01).Compared with the control group,the estrus rate,conception rate,calving rate and calf survival rate of the high-yielding breeding group for yak calves with every other year were 88.00%,83.00%,78.00%and 96.16%,respectively,which were increased by 23.95%,25.76%,34.49%and 7.25%,respectively,and the difference was significant(P<0.05).The high-yield breeding technology of yak significantly improved the estrus effect of annual yak calves and yak calves with every other year,and the survival rate of Angus-yak hybrids was also significantly improved.