ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2011, Vol. 42 ›› Issue (1): 18-24.

• 遗传繁育 • Previous Articles     Next Articles

Associations of Ghrelin (GHRL) and Its Receptor (GHSR) Genes Polymorphismswith Duck Growth and Carcass Traits

FANG Mei-xia1, 2, LI Ying2, XU Hai-ping2, XIE Liang2, LIAO Xin-di2, LIANG Min3,
NIE Qing-hua2, ZHANG Xi-quan2*   

  1. 1.Laboratory Animal Management Center, School of Medicine, Jinan University, Guangzhou 510632, China; 2.College of Animal Science, South China Agricultural University， Guangzhou 510642, China;3. Sanshui Lianke Duck Farm, Foshan 528000, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-01-25 Published:2011-01-25

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Abstract: The aim of this study was to analyze the association of GHRL and GHSR genes polymorphisms with duck growth and carcass traits. In this study, two SNPs of GHRL gene (C-729T and C+985T) and two SNPs of GHSR gene (T404C and G3427A) were genotyped by PCR-RFLP in a random Sanshui White Duck population to investigate the associations of SNP and their haplotypes with growth and carcass traits. Result showed that C-729T was significantly associated with body weight (BW) at 21 days (BW21), BW28, BW35, BW49, eviscerated weight and Thymus gland weight （P<0.05) Meanwhile, the individuals with CT genotype had better duck body weight gain. T404C was significantly associated with leg muscle weight and spleen weight （P<0.05). And in these traits, the Least-square means of individuals with TT genotype was higher than others. G3427A was significantly associated with BW35, BW49, dressed weight, eviscerated weight with giblet, eviscerated weight and wing weight （P<0.05). And individuals with AA genotype had the highest value of all traits. Otherwise, no significant association of C985T with any growth and carcass traits was found Association analysis of haplotypes indicated similar results with that of SNP It was suggested that C-729T of duck GHRL gene and T404C and G3427A of duck GHSR gene were important molecular markers for duck growth and carcass traits.

Key words: duck, Ghrelin, GHSR, growth traits, carcass traits, association analysis