›› 2010, Vol. 37 ›› Issue (11): 105-109.

• 遗传繁育 • Previous Articles     Next Articles

SNP of IGF-Ⅰ Gene and its Association with Carcass Traits in Chicken

JIN Wei1，ZHANG De-xiang2，LU Sheng-xia2，QI Xiao-hong2，WANG Dai-wei1，YANG Liu1，DENG Xue-mei1   

  1. (1.MOA Key Laboratory of Animal Genetics and Breeding，College of Animal Science and Technology，China Agricultural University，Beijing 100193，China；2.Guangdong Wenshi Food Co.Ltd.，Xinxing 527439，China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-11-20 Published:2010-11-20
  • Contact: DENG Xue-mei

Abstract: In this study, the genetic polymorphism of insulin-like growth factor Ⅰ(IGF-Ⅰ) gene of 5′region in 438 yellow feather dwarf broilers was detected by PCR-RFLP method. PCR products treated by Hinf Ⅰ appeared GG，GT and TT genotypes. χ2 test showed the population was in Hardy-Weinberg equilibrium in this locus(P>0.05). Variance analysis indicated gender had extremely significant effect (P<0.01) on 9 traits (body weight and carcass weight，cutaneous fat thickness，half-eviscerated weight，eviscerated weight，breast muscle weight，drumstick weight，abdominal fate weight) and significant effect (P<0.05) on intramuscular fat，that family affected 8 traits extremely significantly (P<0.01)，while that genotype effect was suggestively associated with abdominal fat rate (P<0.05)，approximately suggestively associated with abdominal fat weight (P=0.0669). Multiple comparison of different genotypes’ least square mean displayed abdominal fat weight and abdominal fat rate of genotype TT were significantly lower than that of genotype GT (P<0.05)，while that of genotype GG was no different significantly from genotype GT and TT (P>0.05)

Key words: chicken; insulin-like growth factor Ⅰ gene; PCR-RFLP; carcass trait

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