文章详细信息 关键词： 后备牛;;蛋白质;;生长性能;;营养物质消化率;;瘤胃发育 [gap=717]Keywords: replacement cattle;protein;growing performace;digestion;rumen
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Replacement of the cattle changed 更换工作变牛了
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It was important to select replacement bulls of 18-month-old based on their growth and development and progeny testing in bo-hai Black Cattle.
根据生长发育和后裔性能测定选择18月龄后备种牛是渤海黑牛选择的重点。
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