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西门塔尔牛bLF-exon11基因多态性及其与乳房炎易感性和部分乳性状的相关分析

DOI: 10.3969/j.issn.1000-7091.2012.03.042, PP. 218-222

Keywords: 牛乳铁蛋白,体细胞,乳房炎,聚合酶链式反应-单链构象多态

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Abstract:

为了探讨西门塔尔牛乳铁蛋白基因第11外显子多态性,及其与乳房炎和部分乳性状的关系,利用PCR-SS-CP和DNA测序技术,对118头健康牛和38头感染乳房炎牛个体,进行了第11外显子的基因多态性分析。结果发现,健康牛和感染乳房炎牛个体的第11外显子基因型和基因频率分布差异均极显著(P<0.01),感染牛中AA基因型和A基因频率均极显著高于健康牛(P<0.01)。而且,AA基因型个体SCS显著高于AB和BB型个体(P<0.05),AA型个体的乳蛋白极显著高于AB型(P<0.01)、显著高于BB型(P<0.05),而BB型显著高于AB型(P<0.05)。这表明乳铁蛋白基因第11外显子的A基因,可能是一个西门塔尔牛乳房炎的易感基因。

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