Poult. Sci.
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Poult Sci 2008. 87:22-26. doi:10.3382/ps.2007-00259
© 2008 Poultry Science Association
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GENETICS: Research Note

Association of Interleukin-10 Cluster Genes and Salmonella Response in the Chicken

S. B. Ghebremicael, J. R. Hasenstein and S. J. Lamont

Department of Animal Science, Iowa State University, Ames 50011

1 Corresponding author: sjlamont{at}iastate.edu

Salmonella enteritidis lipopolysaccharide stimulates interleukin 10 (IL10) gene expression in chickens. Four genes in the IL10 cluster [polymeric immunoglobulin receptor (PIGR), interleukin 10 (IL10), map kinase-activated protein kinase 2 (MAPKAPK2), and ligatin (LGTN)] plus dual-specificity tyrosine-(Y)-phosphorylation regulated kinase1A (DYRK1A) were investigated using the F8 generation of 2 related advanced intercross lines (AIL). The AIL were generated by crossing outbred broilers with dams of 2 highly inbred lines (Leghorn and Fayoumi). Intercrossing continued within the 2 dam lines. The F8 chicks (n = 132) were intraesophageally inoculated at 1 d with S. enteritidis. At d 7 or 8, both spleen tissue and cecal contents were cultured to quantify S. enteritidis load. The F8 population was genotyped for one single nucleotide polymorphism (SNP) per gene by using a multiplexed SNaPshot assay. Association of gene SNP with S. enteritidis bacterial burden was analyzed by the GLM. The MAPKAPK2 and IL10 genes were highly (P < 0.001) associated with S. enteritidis burden in spleen tissue and cecal luminal content. Suggestive associations (P < 0.05) of PIGR with spleen tissue and cecal content were found. The results suggest that SNP in MAPKAPK2 and IL10 were strongly associated with Salmonella burden and may be valuable in generating resistant birds by marker-assisted selection.

Key Words: lipopolysaccharide • interleukin-10 cluster genes • Salmonella • advanced intercross line • single nucleotide polymorphism






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