China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (7): 2181-2189.doi: 10.16431/j.cnki.1671-7236.2020.07.023

• Genetics and Breeding • Previous Articles     Next Articles

Expression of IGFBP-3 Gene in Tissues of Two Chicken Breeds and Its Association with Growth Traits

SHAN Yanju, JI Gaige, JU Xiaojun, ZHANG Ming, TU Yunjie, LIU Yifan, ZOU Jianmin, SHU Jingting   

  1. Jiangsu Institute of Poultry Science, Key Laboratory for Poultry Genetics and Breeding of Jiangsu Province, Yangzhou 225125, China
  • Received:2020-02-17 Online:2020-07-20 Published:2020-07-18

Abstract: To observe the correlation between the expression of the IGFBP-3 gene and growth traits in chickens,the expression profiles of the IGFBP-3 gene of pectoral muscle and liver in two yellow-feathered broiler breeds (Huashan partridge chickens and Qingyuan partridge chickens) differing in growth rate were detected by Real-time quantitative PCR.Results showed that IGFBP-3 mRNA could be detected in pectoral muscle and liver at 9 embryonic day.The expression level of IGFBP-3 mRNA in pectoral muscle in both two chicken breeds was higher than that in liver at the same embryo age.After hatching,the expression level of IGFBP-3 mRNA in liver in two chicken breeds increased rapidly while the expression level of IGFBP-3 mRNA in pectoral muscle decreased.The expression level of IGFBP-3 mRNA in liver in both two chicken breeds was significantly higher than that in pectoral muscle at the same day old (P<0.01).The correlation analysis showed that in both two chicken breeds the mass of body,pectoral muscle and liver were significantly positively correlated with the expression level of IGFBP-3 mRNA in liver (P<0.05;P<0.01),and significantly negatively correlated with the expression level of IGFBP-3 mRNA in pectoral muscle(P<0.01).These results indicated that the expression level of the IGFBP-3 gene in chickens varied in breed,age and organ.The liver produces most IGFBP-3 after hatching,and the expression level of IGFBP-3 mRNA in liver might be important for the body mass and pectoral mass in chickens.

Key words: IGFBP-3 gene; chicken; expression; growth traits

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