Association between G316A growth hormone polymorphism and economic traits in pigs

Genetics and Molecular Biology

Danielle Assis De Faria¹  Simone Eliza Facioni Guimarães¹  Paulo Sávio Lopes¹  Aldrin Vieira Pires²  Samuel Rezende Paiva²  Bruna Pena Sollero¹  Amauri Arias Wenceslau² 

[1] ,Universidade Federal de Viçosa Departamento de Zootecnia Viçosa MG ,Brazil

关键词: candidate genes;    divergent cross;    molecular marker;    sex x genotype interaction;    swine;   

DOI  :  10.1590/S1415-47572006000400010

来源: SciELO

【 摘 要 】

The association between G316A growth hormone polymorphism and quantitative traits was investigated in an F2 population of pigs. Association analyses were performed using a statistical model that included genotype, sex, batch and sex by genotype interaction as fixed effects and sire as random effect. The polymorphism was associated with the number of right teats (p = 0.03), heart weight (p = 0.04), lung weight (p = 0.05), carcass length determined by the Brazilian carcass classification method (p = 0.04), picnic shoulder weight (p = 0.07), jowl weight (p = 0.01), pH 24 h after slaughtering (p = 0.03) and drip loss (p = 0.01). Interaction between genotype and sex was observed for six performance traits. The additive effect was significant (p < 0.10) for heart weight, jowl weight and pH 24 h after slaughtering. The effect of dominance was significant (p < 0.05) for number of right teats, heart weight, carcass length, picnic shoulder weight and pH 24 h after slaughtering. This study shows that the growth hormone gene is a potential candidate for investigating the phenotypic variation of quantitative traits in pigs, and suggests its possible application in breeding programs.

【 授权许可】

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