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奶牛性控冻精人工授精效果的研究

DOI: 10.7668/hbnxb.2010.01.022, PP. 113-116

Keywords: 奶牛,性别控制,冷冻精液,人工授精

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Abstract:

为研究奶牛性控冻精人工授精效果并合理制定人工授精方案,采用流式细胞仪制备性控冻精,对3947头健康荷斯坦牛进行人工授精.结果表明:①性控冻精和常规冻精的受胎率、产犊率差异不显著(P>0.05),但性控冻精的雌犊率和繁殖率分别达到92.01%和50.03%,对照组仅为51.13%和3.97%,差异极显著(P<0.01).②青年牛的情期受胎率达到55.25%,极显著高于经产牛(P<0.01);青年牛的产犊率达到98.31%,显著高于经产牛(P<0.05);青年牛的繁殖率为51.8%,经产牛为2.12%,存在极显著差异(P<0.01).③采用第1次人工授精后10~11h重复授精1次,每次1支性控冻精的授精方案,其情期受胎率为55.17%,繁殖率达到55.81%,同其他方案相比,差异极显著(P<0.01).应用性控冻精进行人工授精可以显著提高母牛的繁殖效率.

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