ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2014, Vol. 45 ›› Issue (7): 1053-1059.doi: 10.11843/j.issn.0366-6964.2014.07.004

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A Genome-wide Association Study of Market Weight Using Four Statistic Models in Jinghai Yellow Chicken

FAN Qing-can1,WANG Jin-yu1*,ZHANG Gen-xi1,TANG Ying1,ZHANG Tao1,GU Yu-ping2,SHI Hui-qiang2   

  1. (1.College of Animal Science and Technology,Yangzhou University,Yangzhou 225009,China;2.Jiangsu Jinghai Poultry Industry Group CD.,LTD.,Nantong 226103,China)
  • Received:2014-01-25 Online:2014-07-23 Published:2014-07-23

Abstract:

The aim of this study was to conduct a genome-wide association study (GWAS) using four statistic models to identify the single nucleotide polymorphisms (SNP) associated with 16-week-old body weight of Jinghai Yellow chicken.60KSNP chips and four statistic models was applied to analyze the associations between different genotypes and body weight at the age of 16 weeks (BW16).The four models included two line regression models,generalized linear model (GLM) and mixed liner model (MLM).The result showed that although the numbers of significant SNPs (P<0.05) identified by the four models were different,each of them had its merits.Therefore,different models should be selected for different purpose in practice.Twenty significant SNPs (P<0.05) affecting on BW16 were identified.They located on chromosome 1,4,19,25 and Z,respectively.And the regions of 50.6-53.6 Mb on chromosome 1 and 33.6-44.8 Mb on chromosome Z were the concentrated areas containing more significant SNPs.Moreover,some of the significant SNPs (P<0.05) located in the quantitative trait loci (QTLs) in previous papers reported.Finally,17 candidate genes were identified and the functions of FAM184B,NCAPG and NLK were discussed.All these present results would benefit the researches of chicken molecular markers.

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