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奶牛小区实施同期发情后应用性控冻精人工授精的效果观察

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摘要 为观察奶牛养殖小区应用同期发情后,实施性控冻精人工授精的效果进行试验。结果表明:发情率为87.5%,而且92.9%的发情牛集中在20h之内,并获得了58.%的情期受胎率;≥17月龄的参配育成牛的妊娠率(83.3%)明显高于<17月龄的参配牛的妊娠率(33.3%),差异显著(P<0.05);输精到排卵侧子宫角的妊娠率(62.5%)高于输精到子宫体的妊娠率(50.0%),但差异不显著(P>0.05);发情后长时间(超20h)不排卵,可以肌肉注射促排卵素3号25μg/头,然后输精,可提高妊娠率。
出处 《黑龙江动物繁殖》 2009年第1期31-33,共3页 Heilongjiang journal of animal reproduction
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