Associations between Leu/Val polymorphism of growth hormone gene and milk production traits in Black-and-White cattle
Associations between Leu/Val polymorphism of growth hormone gene and milk production traits in Black-and-White cattle
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DOI：
10.5194/aab-45-421-2002
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发表时间：
2002-01-01
影响因子：
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通讯作者：
Dybus, A
中科院分区：
文献类型：
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作者：
Dybus, A
分析了不同比例荷斯坦黑白牛生长激素基因（Leu/Val）多态性与泌乳性状的关系。共有1086头奶牛参与了这项研究。采用PCR-RFLP法进行基因分型。基因型和等位基因频率分别为：LL基因型0.653、LV基因型0.324、VV基因型0.023、GH基因型0.815、GH基因型0.185。亮氨酸/缬氨酸多态性与奶牛产奶量性状的关系仅在第一次泌乳时发现。LL基因型奶牛的产奶量、脂肪量和蛋白质产量均高于lv个体（P <或等于0.01）。
Associations between polymorphism of the bovine growth hormone (GH) gene (Leu/Val) and milk production traits of Black-and-White cattle with different proportional share of Holstein Friesian genes were analysed. A total of 1086 cows were included in the study. PCR-RFLP method was used for genotyping. The frequencies of genotypes and alleles were as follows: 0.653 for LL genotype, 0.324 for LV and 0.023 for VV, and 0.815 for GH(l.) and 0.185 for GH(V). Associations between Leu/Val polymorphism and milk production traits of cows were found only in first lactation. Cows with LL genotype had higher milk, fat and protein yield compared to L V individuals (P less than or equal to 0.01).