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ben di huang niu wai bu fa qing biao xian de diao cha zong jie
Pages: 33-35
Year: Issue:  4
Journal: Liaoning Journal of Animal Husbandry & Veterinary Medicine

Keyword:  发情表现本地黄牛受胎率冷冻精液输精时间母牛输精效果人工授精排卵规律调查;
Abstract: <正> 一、调查目的当前,在我省大力推广冷冻精液,用肉用牛改良本地黄牛的工作中,如何掌握本地黄牛的发情排卵规律,做到适时而又准确地输精,是提高受胎率的关键问题。几年来,我省各地在黄牛人工授精配种实践中,积累了一些经验,但在掌握发情规律,适时输精方面,尚缺乏全面
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