ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2013, Vol. 44 ›› Issue (9): 1355-1362.doi: 10.11843/j.issn.0366-6964.2013.09.004

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Haplotypes and Copy Number Variation of Genome in Chromosome 16 and Their Association with IgG Level in Chickens

ZHOU Wei1,2, LIU Ran-ran1, ZHENG Mai-qing1, WEN Jie1,2, ZHAO Gui-ping1*,CHEN Guo-hong2*, CHANG Guo-bin2, ZHANG Lei1, SUN Yan-fa1,2, LI Peng1, SUN Yan1   

  1. (1. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; 2. College of Animal Science and Technology,Yangzhou University, Yangzhou 225009, China)
  • Received:2013-03-15 Online:2013-09-23 Published:2013-09-23

Abstract:

This study was performed to examine the haplotypes and copy number variation (CNV) of genome in chromosome 16 of Beijing-You chicken and their association with IgG level. A total of 995 chickens were genotyped using 60 K Beadchip and IgG level were measured at 80 d in serum. PennCNV, Haploview 4.1 and PHASE 2.0 were used to analyze CNV, linkage disequilibrium (LD) and haplotypes. The results represent two CNVs and two Blocks. In Block1, three haplotypes and six diplotypes were observed where IgG level of H1H2 was 1.45 times as H3H3 (P<0.05). In Block2, nine haplotypes and nine normal diplotypes were analyzed, but no significant difference were identified (P>0.05). Detection of copy number variations at GGA16201 882-299 166 bpwas 1.25 times as that of the duplication of this region (P<0.05). Eight SNPs markers were chosen for analysis. The SNP markers Gga_rs16057310, Gga_rs15788237 and Gga_rs15788101 were significantly differed in IgG level among genotypes (P<0.05). In all, Block1, CNV2 (201 882-299 166 bp) and SNPs Gga_rs16057310, Gga_rs15788101, Gga_rs15788237 may be influenced on IgG level. The genes in these regions such as CD1b, TRIM27,ZNF692 and MHC could be related with chicken immunity function.

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