China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (8): 2502-2509.doi: 10.16431/j.cnki.1671-7236.2020.08.018

• Genetics and Breeding • Previous Articles     Next Articles

Expression of MyoG and IGF-1 Genes and Its Correlation Analysis with Growth and Slaughter Traits of Yanjin Black-bone Chickens

LI Fengyun1, ZHANG Ru1, WANG Kun1, DOU Tengfei1, LIU Mingzheng1, LI Qihua1, YANG Hongtao2, JIA Junjing1, GE Changrong1   

  1. 1. Yunnan Provincial Key Laboratory of Animal Nutrition and Feed, Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China;
    2. Yunnan Breeding Center for Birds, Kunming 650201, China
  • Received:2019-10-08 Online:2020-08-20 Published:2020-08-15

Abstract: In order to study the effect of myogenin (MyoG) and insulin-like growth factor-1 (IGF-1) genes expression on the growth and development of poultry,Yanjin Black-bone and Daweishan Mini chickens with large differences in body size were chosen.At the age of 300 days,the body weight,body size and slaughter traits of 20 chickens were measured for comparative analysis,and the relative expression of MyoG and IGF-1 genes mRNA in chest muscle,leg muscle and liver were detected.Finally,the correlation between growth and slaughter traits and gene relative expression were analyzed,respectively.The results showed that the body weight,body size and slaughter traits of Yanjin Black-bone chickens were higher than that of Daweishan Mini chickens.Moreover,the expression of MyoG and IGF-1 genes in chest muscle,leg muscle and liver of Yanjin Black-bone chickens were also higher than that of Daweishan Mini chickens,and the expression trend was as follows:Chest muscle > leg muscle > liver.Correlation analysis results showed that the expression of MyoG and IGF-1 genes in pectoralis muscle,leg muscle and liver of Yanjin Black-bone and Daweishan Mini chickens were significantly positively correlated with body weight,body size and slaughter traits (P<0.05).The relative expression of MyoG gene was extremely significantly correlated with all the traits except chest depth (P<0.01),but the relative expression of IGF-1 gene was significantly correlated with body weight,body length,chest depth and sternum length (P<0.05).Therefore,MyoG and IGF-1 genes could be used as candidate genes for growth traits of Yanjin Black-bone and Daweishan Mini chickens for breeding.

Key words: Yanjin Black-bone chickens; Daweishan Mini chickens; IGF-1 gene; MyoG gene; growth trait; slaughter trait

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