中国荷斯坦牛体型外貌性状遗传参数估计

摘要

基于黑龙江省 12 个规模化牧场 5 a 间累计 1.32 万头中国荷斯坦牛的体型外貌测定数据,开展遗传参数估计研究。结果表明：试验牛群体型“很好” “好佳”和“好”各级分别占 5% 、 73% 和 22%。各功能性状遗传力为 0.02~0.55 ,其中乳房深度具有高遗传力,体高、尻宽、蹄角度等 8 个功能性状属于中遗传力,其余 11 个功能性状(胸宽、体深、腰强度等)遗传力较低。蹄踵深度、体深,与体型总分的遗传相关系数分别为 -0.03 和 -0.29 ,其余性状与总分呈遗传正相关。

关键词

中国荷斯坦牛 / 体型外貌性状 / 遗传参数估计 / 黑龙江地区

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基金资助

国家自然科学基金面上项目(32070571)

黑龙江省现代农业奶牛产业技术协同创新推广体系项目(230000237613110000244)