Abasht, BehnamSandford, E.Arango, J.Settar, P.Fulton, J. E.O’Sullivan, N. P.Hassen, A.Habier, D.Fernando, R. L.Dekkers, J. C. M.Lamont, S. J.2014-09-192014-09-19Copyright2009Abasht, B., Sandford, E., Arango, J., Settar, P., Fulton, J. E., O'Sullivan, N. P., . . . Lamont, S. J. (2009). Extent and consistency of linkage disequilibrium and identification of DNA markers for production and egg quality traits in commercial layer chicken populations. BMC Genomics, 10(SUPPL. 2) doi:10.1186/1471-2164-10-S2-S21471-2164http://udspace.udel.edu/handle/19716/13236Final published versionThe genome sequence and a high-density SNP map are now available for the chicken and can be used to identify genetic markers for use in marker-assisted selection (MAS). Effective MAS requires high linkage disequilibrium (LD) between markers and quantitative trait loci (QTL), and sustained marker- QTL LD over generations. This study used data from a 3,000 SNP panel to assess the level and consistency of LD between single nucleotide polymorphisms (SNPs) over consecutive years in two egg-layer chicken lines, and analyzed one line by two methods (SNP-wise association and genome-wise Bayesian analysis) to identify markers associated with egg-quality and egg-production phenotypes.Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.Article10.1186/1471-2164-10-S2-S2