Poultry

Extent and Consistency of Linkage Disequilibrium and Identification of DNA Markers for Production and Egg Quality Traits in Commercial Layer Chicken Populations

Authors
  • Erin Beach (Iowa State University)
  • Behnam Abasht (Iowa State University)
  • Rohan L. Fernando (Iowa State University)
  • Jack C.M. Dekkers (Iowa State University)
  • Susan J. Lamont (Iowa State University)
  • Jesus Arango (Hy-Line)
  • Petek Settar (Hy-Line)
  • Janet Fulton (Hy-Line)
  • Neil P. O'Sullivan (Hy-Line)

Abstract

A 3,072 single nucleotide polymorphism (SNP) panel was used to identify genetic markers linked to quantitative trait loci (QTL). Two association methods were used to search for QTL, SNP-wise and genome-wise models. The QTL associated with SNPs, found using both of these methods, can be applied to breeding programs in marker assisted selection (MAS).

The extent and consistency of linkage disequilibrium (LD) was measured in two lines of commercial egg laying chickens by analysis of SNPs. Correlations were drawn between measurements of two consecutive years to determine consistency. At short distances, LD is retained which allows for markers at high LD with a trait to be effectively applied in MAS.

Keywords: ASL R2444

How to Cite:

Beach, E., Abasht, B., Fernando, R. L., Dekkers, J. C., Lamont, S. J., Arango, J., Settar, P., Fulton, J. & O'Sullivan, N. P., (2009) “Extent and Consistency of Linkage Disequilibrium and Identification of DNA Markers for Production and Egg Quality Traits in Commercial Layer Chicken Populations”, Iowa State University Animal Industry Report 6(1). doi: https://doi.org/10.31274/ans_air-180814-817

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Published on
01 Jan 2009
Peer Reviewed