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5个绵羊群体LHR基因多态性与产羔数的关联分析

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摘要 实验旨在探究绵羊LHR基因rs410734874、rs401906902、rs398733991、rs4243283244个位点的多态性与5个绵羊群体产羔数之间的关系,以期为绵羊高繁殖力分子育种提供新的遗传标记。利用Sequenom Mass ARRAY®SNP技术对5个绵羊群体(杜泊、滩寒羊、杂交一代、杂交二代、横交一代)共768只绵羊LHR基因的4个位点进行检测,并与产羔数进行关联分析。结果表明:LHR基因rs401906902位点在杜泊、滩寒羊、杂交一代、杂交二代、横交一代5个群体中均表现为低度多态;rs398733991位点在滩寒羊群体中表现为中度多态,在杜泊、杂交一代、杂交二代、横交一代群体中表现低度多态;rs424328324、rs4107348742个位点在5个群体中均表现为中度多态。经Hardy-Weinberg平衡检验分析,rs401906902、rs398733991、rs4107348743个位点在5个群体均处于Hardy-Weinberg平衡状态,表明这3个位点在5个群体中已趋于稳定;rs424328324位点除横交一代羊群体外,在其他群体处于Hardy-Weinberg平衡状态;rs410734874位点在横交一代群体中与产羔数有一定的关联性,其中TT型产羔数显著高于TA型,说明rs410734874位点适用于横交一代绵羊群体多羔性状的选育;rs401906902、rs398733991、rs4243283243个位点各基因型之间产羔数差异均不显著,不适用于绵羊多羔性状的选育。本研究将为开展提高绵羊繁殖力的标记辅助选育提供参考。
机构地区 宁夏大学农学院
出处 《中国畜牧杂志》 CAS 北大核心 2021年第12期132-136,共5页 Chinese Journal of Animal Science
基金 宁夏优质肉羊新品种培育(NXNYYZ20150101) 现代生物技术用于肉羊新品种(系)培育技术研究(NXNYYZ 2015010102-01)。
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