【摘要】 采用娟姗牛与荷斯坦牛X-性控冷冻精液,给娟姗母牛、荷斯坦母牛及胚胎移植供体进行人工授精,以探索两种冷冻精液人工授精受胎效果及供体牛生产胚胎效果。研究结果表明,人工输精试验牛情期受胎率及供体母牛的平均可用胚胎数和可用胚胎率受公牛X-性控冷冻精液的影响;人工输精试验牛的受胎率青年牛优于经产牛,而荷斯坦牛的优于娟珊牛;生产胚胎的供体牛,综合可用胚胎数和可用胚胎率,在同一品种上青年牛的效果优于经产牛,在不同品种而同一年龄上的荷斯坦牛优于娟珊牛。更多还原

【Abstract】 A trial of artificial insemination(AI)has been carried out with frozen semen of X-sex control for the cows of Jersey and Holstein-Friesian,as well as the donators of embryo transfer to evaluate the effect on this AI research work.Results from the synchronous estrus,superoulation,AI and embryo collection in this trial showed that the conception rate and the amount and rate of available embryo from the donators were affected by the frozen semen of X-sex control;higher conception rate was found in heifers other than delivered cows and Holstein-Friesian other than Jersey cows in different breeds.However,the results of amount of available embryo and rate of available embryo from the younger donators were much better than the delivered ones in the same breed,and the better result also occurred in Holstein-Friesian when the comparison was done in the same age of different breed cows.更多还原