中国畜牧兽医 ›› 2014, Vol. 41 ›› Issue (9): 184-188.

• 遗传繁育 • 上一篇    下一篇

汶上芦花鸡催乳素基因外显子2的遗传变异及其与繁殖性状的相关性分析

李福伟, 韩海霞, 雷秋霞, 周艳, 高金波, 刘玮, 曹顶国   

  1. 山东省农业科学院家禽研究所, 山东省家禽育种工程技术研究中心, 山东济南 250023
  • 收稿日期:2014-02-07 出版日期:2014-09-20 发布日期:2014-09-24
  • 通讯作者: 曹顶国 E-mail:jqsyzs@163.com
  • 作者简介:李福伟(1977- ),男,山东人,硕士,助理研究员,研究方向:家禽遗传育种与环境控制。
  • 基金资助:

    山东省良种工程(2011LZ15);国家蛋鸡产业技术体系(CARS-41-S15);山东地方鸡种质资源评价及创新利用(2012GZX21027)。

Exon 2 SNP Detection of PRL Gene and its Associations with Egg Production Traits in Wenshang Barred Chicken

LI Fu-wei, HAN Hai-xia, LEI Qiu-xia, ZHOU Yan, GAO Jin-bo, LIU Wei, CAO Ding-guo   

  1. Poultry Breeding Engineering Technology Center of Shandong Province, Institute of Poultry, Shandong Academy of Agricultural Sciences, Jinan 250023, China
  • Received:2014-02-07 Online:2014-09-20 Published:2014-09-24

摘要: 本研究以汶上芦花鸡为研究对象,利用PCR-SSCP技术对催乳素(prolactin,PRL)基因外显子2进行SNP检测和测序分析,并对该基因与汶上芦花鸡繁殖性状的相关性进行了分析。结果表明,PRL基因外显子2存在1个多态性位点,该位点由于在3838 bp发生C→T的碱基突变,产生了AA、AB和BB 3种基因型,并导致氨基酸发生改变,由亮氨酸变为苯丙氨酸。BB基因型和等位基因B的频率最高;3种基因型(AA、AB和BB)在开产日龄、开产蛋重、开产体重、300日龄体重、300日龄蛋重的繁殖性状指标上均未达到差异显著性水平(P>0.05)。表明PRL基因外显子2多态性与汶上芦花鸡繁殖性状无明显相关性。

关键词: 催乳素基因; PCR-SSCP; 汶上芦花鸡; 繁殖性状

Abstract: In this study, Wenshang Barred chickens was selected as the research object,exon 2 of prolactin (PRL) gene were detected by PCR-SSCP and the DNA fragments were sequenced. The correlation analysis between the polymorphism of the exon 2 and egg production traits were carried out respectively. The results indicated that there were two polymorphic sites in exon 2. C→T mutation at the position of the 3838 bp was found, which resulted in 3 genotypes (AA, AB and BB). Furthermore, an amino acid changed from leucine to phenylalanine. The frequencies of genotype BB and allele B were the highest. Three genotypes of AA, AB and BB in age at first egg, living weight at first egg, egg weight of first egg, living weight at age of 300 days, egg weight at age of 300 days index of reproductive traits difference did not reach the significant level (P>0.05). The results showed that PRL gene exon 2 polymorphism and reproductive traits of Wenshang Barred chickens presented no significant correlation.

Key words: prolactin gene; PCR-SSCP; Wenshang Barred chicken; egg production traits

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