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高邮鸭VLDLR基因部分序列的多态性及其与腹脂率的关联分析

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摘要 极低密度脂蛋白受体(VLDLR)主要功能是结合富含载脂蛋白E的脂蛋白参与甘油三酯的代谢。通过基因测序方法检测了高邮鸭VLDLR基因部分序列的多态性,并利用最小二乘法分析其与腹脂率的关联性。结果显示:在第244 bp处发现G/A转换,同时在第232 bp处发现C/T转换。群体中第244 bp处等位基因G为优势等位基因,基因频率为0.76,该位点属于同义多态;第232 bp处等位基因C为优势等位基因,基因频率为0.94,该位点属于同义突变。通过卡方检验,两位点均处于Hardy-Weinberg遗传平衡状态(P>0.05)。最小二乘法分析结果表明,高邮鸭VLDLR基因第244 bp处AG型平均腹脂率(1.52%)极显著低于AA型和GG型(P<0.01);AA基因型腹脂率高于GG型,但两者之间差异不显著。这可能是一种杂合子优势,推测这种多态可能是通过改变VLDLR基因转录的效率而影响到脂肪沉积的。
出处 《畜牧与兽医》 北大核心 2015年第7期41-44,共4页 Animal Husbandry & Veterinary Medicine
基金 江苏高校优势学科建设工程项目 江苏省高校动物重要疫病与人兽共患病防控协同创新中心资助
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