不同季节生产的荷斯坦青年母牛冻胚妊娠率的比较
摘要
本文比较了四个季节生产的荷斯坦青年母牛冷冻胚胎的妊娠率。结果表明,春、夏、秋、冬四个季节生产的冷冻胚胎的妊娠率差异不大,分别为49.21%、47.78%、54.31%和55.81%。由此得出结论,季节对母牛有效胚胎冷冻后的质量没有影响。
出处
《黑龙江动物繁殖》
2013年第6期17-18,29,共3页
Heilongjiang journal of animal reproduction
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