《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (3): 813-818.doi: 10.16431/j.cnki.1671-7236.2017.03.027

• 遗传繁育 • 上一篇    下一篇

边鸡IGF-ⅠR基因AluⅠ位点多态性及其对生长性状和繁殖性状的遗传效应分析

吴鹏飞1, 王冬2, 张向前1, 张丽3, 丁馥香3, 张跟喜1   

  1. 1. 扬州大学动物科学与技术学院, 扬州 225009;
    2. 中国农业科学院家禽研究所, 扬州 225125;
    3. 山西省农业科学院畜牧兽医研究所, 太原 030032
  • 收稿日期:2016-10-31 出版日期:2017-03-20 发布日期:2017-03-21
  • 通讯作者: 张跟喜 E-mail:gxzhang@yzu.edu.cn
  • 作者简介:吴鹏飞(1992-),男,河北衡水人,硕士生,研究方向:动物遗传育种与繁殖,E-mail:1015758677@qq.com
  • 基金资助:

    山西省科技公关(20140311021-1);国家肉鸡产业技术体(nycytx-42-G1-05);江苏高校优势学科建设工程;扬州大学科技创新培育基金(2016CXJ069)

Study on the Polymorphisms of IGF-ⅠR Gene Alu Ⅰ Locus and Genetic Effect on Growth and Reproduction Traits in Bian Chicken

WU Peng-fei1, WANG Dong2, ZHANG Xiang-qian1, ZHANG Li3, DIGN Fu-xiang3, ZHANG Gen-xi1   

  1. 1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;
    2. Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou 225125, China;
    3. Shanxi Livestock and Poultry Breeding Station, Taiyuan 030032, China
  • Received:2016-10-31 Online:2017-03-20 Published:2017-03-21

摘要:

为了寻找与边鸡生长性状和繁殖性状相关的遗传标记,本试验采用PCR-RFLP技术检测边鸡类胰岛素生长因子Ⅰ受体(insulin-like growth factor Ⅰreceptor,IGF-ⅠR)基因Alu Ⅰ位点的多态性,并分析该多态位点对边鸡生长性状和繁殖性状的遗传效应。结果显示,边鸡IGF-ⅠR基因Alu Ⅰ位点存在多态性,在外显子2的376 bp处有1个G→A突变,产生了GG、GA和AA 3种基因型,基因型频率分别为0.687、0.296和0.017,GG为优势基因型;G等位基因频率为0.835,为优势等位基因。卡方适合性检验结果表明,该基因座位在边鸡群体中处于哈代-温伯格平衡状态(P>0.05)。相关分析结果表明,在8、14、16和18周龄时,GG基因型个体的体重显著高于GA基因型(P<0.05),GG基因型个体的开产体重极显著高于GA基因型个体(P<0.01),但并不能说明该位点可以作为影响边鸡繁殖性状的遗传标记。IGF-ⅠR基因外显子2的Alu Ⅰ位点(G→A)可能是影响边鸡生长性状的一个遗传标记。

关键词: 边鸡; 胰岛素样生长因子-Ⅰ受体基因; 生长性状; 繁殖性状; PCR-RFLP

Abstract:

Single nucleotide polymorphisms (SNPs) in exon 2 of insulin-like growth factor Ⅰ receptor (IGF-ⅠR) gene were detected by PCR-RFLP in Bian chicken,which was to find the correlation markers of growth and reproduction traits in Bian chicken.The results showed that AluⅠsite displayed polymorphic, and a G→A mutation at the position of the 376 bp in exon 2 was occurred. There were three genotypes (GG, GA and AA), the genotypes frequencies were 0.687, 0.296 and 0.017, respectively, GG genotype was the dominant genotype, the frequency of G allele was 0.835, which was the dominant allele. This site was in Hardy-Weinberg equilibrium (P>0.05).Correlation analysis showed that GG genotype had significantly higher body weight than those of GA genotype at the age of 8, 14, 16 and 18 weeks (P<0.05);The GG geno type had extremely significantly higher body weight at first egg than those of GA genotype (P<0.01),but it didn't mean that this locus could be used as a genetic marker for reproduction traits in Bian chicken. This results suggested that the AluⅠsite (G→A) in exon 2 of IGF-ⅠR gene could be used as a genetic marker for growth traits in Bian chicken.

Key words: Bian chicken; IGF-ⅠR gene; growth traits; reproduction traits; PCR-RFLP

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