›› 2009, Vol. 36 ›› Issue (4): 119-121.

• 遗传繁育 • 上一篇    下一篇

4个绵羊品种双肌臀基因基因型的检测

孟详人1,马月辉2,关伟军2,赵倩君2,郭军3,何晓红2,浦亚斌2   

  1. (1.黑龙江省农业科学院畜牧研究所,哈尔滨 150086; 2.中国农业科学院北京畜牧兽医研究所,北京 100193;3.中国农业科学院家禽研究所,扬州 225003)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-04-20 发布日期:2009-04-20
  • 通讯作者: 马月辉

Detection of Four Sheep Breeds Callipyge Genotype

MENG Xiang-ren1,MA Yue-hui2,GUAN Wei-jun2,ZHAO Qian-jun2,GUO Jun3,
HE Xiao-hong2,PU Ya-bin2
  

  1. (1.Institute of Animal Science,HAAS,Harbin 150086,China; 2.Institute of Animal Science,CAAS,Beijing 100193,China;3.Poultry Institute,CAAS,Yangzhou 225003,China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-04-20 Published:2009-04-20
  • Contact: MA Yue-hui

摘要: 绵羊的双肌臀(Callipyge, CLPG)基因表型为后臀肌肉增大近30%,是由位于绵羊18号染色体GTL2基因上游32.8 kb处存在1个A→G的单核苷酸多态性(SNP)标记(命名为SNP CLPG)产生的,该SNP标记的存在与CLPG表型完全吻合。通过对SNP CLPG的分子检测,期望发现CLPG基因型种羊,为今后选育肉用性状更优异的新品系奠定基础。为此,选择设计合成了1对引物,采用聚合酶链式反应-限制性片段长度多态性(PCR-RFLP)方法,分别以引进的纯种陶塞特羊、特克塞尔羊、夏洛莱羊和美利奴羊作为研究样本,进行了SNP CLPG位点的PCR检测。获得了预期的493 bp扩增片段,并检测到CLPG基因型特征性的SNP CLPG突变(A→G)。

关键词: PCR-RFLP; 双肌臀基因; 单核苷酸多态性; 绵羊

Abstract: The buttocks muscle can be increased about 30% by Callipyge (CLPG), resulting from an apparent A→G mutation in 32.8 kb upstream of GTL2 in the ovine chromosome 18. The mutation polymorphism is referred to as SNP CLPG, which was later shown to be the only difference between the callipyge and wild-type chromosome. The objective of the research is to select carriers of the callipyge gene by the molecular biological techniques, which is the basis of selection of the excellent meat traits. The SNPs were detected by PCR-restriction fragment length polymorphisms (PCR-RFLP) with one pairs of primers in genome of Dorset sheep, Texel sheep, Charolais sheep and Merino sheep. A→G substitution was found and one special products (493 bp) were amplified.

Key words: PCR-RFLP; Callipyge gene; SNP; sheep

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