Polymorphism of Growth Hormone Gene in 12 Pig Breeds and Its Relationship with Pig Growth and Carcass Traits

  • Wang, Wenjun (Department of Food Science, Jiangxi Agricultural University) ;
  • Huang, Lusheng (Jiangxi Provincial Key Laboratory for Animal Biotechnology, Jiangxi Agricultural University) ;
  • Gao, Jun (Jiangxi Provincial Key Laboratory for Animal Biotechnology, Jiangxi Agricultural University) ;
  • Ding, NengShui (Jiangxi Provincial Key Laboratory for Animal Biotechnology, Jiangxi Agricultural University) ;
  • Chen, Kefei (Jiangxi Provincial Key Laboratory for Animal Biotechnology, Jiangxi Agricultural University) ;
  • Ren, Jun (Jiangxi Provincial Key Laboratory for Animal Biotechnology, Jiangxi Agricultural University) ;
  • Luo, Ming (Jiangxi Provincial Key Laboratory for Animal Biotechnology, Jiangxi Agricultural University)
  • Received : 2002.07.15
  • Accepted : 2002.10.21
  • Published : 2003.02.01


The polymorphism of the growth hormone gene in 12 pig breeds (total n=475) was detected by PCR-Apa I-RFLP, and allele A (449 bp, 101 bp and 55 bp) or allele B (316 bp, 133 bp, 101 bp and 55 bp) were observed. In these pig breeds, we found that European pig breeds had high frequencies of allele B, while Chinese native pig breeds had high frequencies of allele A. In addition, the role of porcine GH was investigated in 117 Nanchang White pigs and 361 Large Yorkshire pigs. Eight traits about growth and carcass were recorded for analyzing associations between GH gene polymorphism and performance quantitative traits. In the Nanchang White pigs, no significant difference was observed between different genotypes and different growth and carcass traits. In Large Yorkshire pigs, those with BB genotype had more lean percentage than pigs with AA genotype (p<0.05). Based on these results, we conclude that the GH locus should be further investigated in commercial breeds to determine its suitability for use in marker-assisted selection programmes.


Growth Hormone Gene;Performance Traits;Pig;PCR-RFLP


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