畜牧兽医学报 ›› 2021, Vol. 52 ›› Issue (9): 2416-2428.doi: 10.11843/j.issn.0366-6964.2021.09.005

• 遗传育种 • 上一篇    下一篇

快大型黄羽肉鸡肉品质性状的遗传参数估计和关键基因挖掘

杨欣婷1, 郑麦青1, 谭晓冬1, 赵桂苹1, 黄超2, 李森1, 李韦1, 文杰1, 刘冉冉1*   

  1. 1. 中国农业科学院北京畜牧兽医研究所 动物营养学国家重点实验室 农业农村部动物遗传育种与繁殖(家禽)重点实验室, 北京 100193;
    2. 广西金陵农牧集团有限公司, 南宁 530049
  • 收稿日期:2021-01-19 出版日期:2021-09-23 发布日期:2021-09-26
  • 通讯作者: 刘冉冉,主要从事动物遗传育种与繁殖研究,E-mail:liuranran@caas.cn
  • 作者简介:杨欣婷(1996-),女,山东济南人,硕士生,主要从事动物遗传育种与繁殖研究,E-mail:yangxinting0704@163.com
  • 基金资助:
    国家自然基金面上项目(31772591);肉鸡产业技术体系岗位科学家项目(CARS-41);中国农业科学院科技创新工程(ASTIPIAS04;ASTIP-IAS-TS-15)

Genetic Parameters Estimation and Key Genes Identification for Meat Quality Traits of Fast-growing Yellow-feather Meat-type Chickens

YANG Xinting1, ZHENG Maiqing1, TAN Xiaodong1, ZHAO Guiping1, HUANG Chao2, LI Sen1, LI Wei1, WEN Jie1, LIU Ranran1*   

  1. 1. Key Laboratory of Animal (Poultry) Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    2. Guangxi Jinling Husbandry Group CO. Ltd., Nanning 530049, China
  • Received:2021-01-19 Online:2021-09-23 Published:2021-09-26

摘要: 旨在挖掘快大型黄羽肉鸡胸肌肉品质性状的重要候选区间和基因。本研究以1 923只快大型黄羽肉鸡为素材,于56日龄屠宰并测定屠宰和胸肌肉品质性状;利用“京芯一号”55K SNP芯片进行基因分型,利用传统最佳线性无偏预测(BLUP)、基因组最佳线性无偏预测(GBLUP)和全基因组关联分析(GWAS)等方法进行遗传参数估计和QTL区间/关键基因的检测。结果显示,胸肌pH、肉色L24 h*。同时发现,位于5号染色体上的2个单倍型对胸肌pH、肉色性状均有极显著影响。以上结果为黄羽肉鸡肉品质遗传选择方案优化和分子育种技术研发奠定了重要基础。

关键词: 黄羽肉鸡, pH, 肉色, 遗传参数, 全基因组关联分析(GWAS)

Abstract: This experiment aimed to excavate the effective regions and key genes related to meat quality traits in fast-growing yellow-feather meat-type chickens. In this experiment, 1 923 fast-growing yellow-feather meat-type chickens were slaughtered at 56 days of age to measure carcass and meat quality traits, and genotyped with the customized chicken 55K SNP array. The genetic parameters for carcass and meat quality traits were estimated using the traditional best linear unbiased prediction (BLUP) and genomic best linear unbiased prediction (GBLUP) methods. The key QTL regions and genes were detected using genome-wide association study (GWAS). The results showed that the estimated heritability of pH, meat color L24 h* as a member of the solute vector family. In addition, the results showed that two haplotypes on chromosome 5 had extremely significant effects on pH and meat color traits. These results lay an important foundation for the optimization of genetic selection scheme and the development of molecular breeding technology for meat quality of yellow-feather meat-type chickens.

Key words: yellow-feather meat-type chickens, pH, meat color, genetic parameter, genome-wide association study(GWAS)

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