数字农科院2.0

澳洲白绵羊美丽臀和肌肉生长抑制素基因基因型的检测

文献类型: 中文期刊

作者: 张淑珍;张莉;赵福平;王慧华;刘瑞凿;刘真;樊红樱;魏彩虹;杜立新

作者机构:

关键词: 澳洲白绵羊;美丽臀;肌肉生长抑制素;PCR-RFLP

期刊名称:中国畜牧兽医

ISSN: 1671-7236

年卷期: 2014 年 41 卷 10 期

页码: 172-178

收录情况: 北大核心

摘要: 美丽臀(callipyge,CLPG)及肌肉生长抑制素(myostatin,MSTN)是全世界公认的与肌肉生长发育相关的基因,突变后分别产生"美丽臀"和"双肌"的优良性状。为研究国外进口品种澳洲白绵羊是否携带2种基因的突变位点,本试验以澳洲白绵羊为试验动物,采用PCR-RFLP技术对CLPG、MSTN基因的多态性进行分型。结果发现:CLPG基因上有1个C→T的SNP位点,澳洲白绵羊群体中有CC和CT 2种基因型;MSTN基因在3′-UTR区发现1个G→A的SNP位点,澳洲白绵羊群体中有GG和GA 2种基因型。用R语言程序对所测数据进行性别间不同基因型与生长发育状况的单因素方差分析得知,CLPG和MSTN基因不同基因型对澳洲白公羊体重、体高、体斜长、尻宽、背膘厚和眼肌面积均无显著性影响(P>0.05);CLPG基因CT基因型在母羊体重上显著高于CC基因型(P<0.05),在体斜长上极显著高于CC基因型(P<0.01),MSTN基因GA基因型母羊眼肌面积极显著高于GG基因型(P<0.01)。澳大利亚进口澳洲白绵羊中筛选到含有CLPG和MSTN基因的突变位点,且该突变位点对绵羊体尺性状有显著性作用,因此澳洲白绵羊引进后可以作为改良本地羊品种、基因聚合及三元配套系的终端父本。

分类号: S826

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