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Unpublished Paper
Application of Genomic Selection Using an Evenly Spaced Low-density Marker Panel in Broiler Chickens
Animal Industry Report
  • Chunkao Wang, Iowa State University
  • David Habier, Iowa State University
  • Anna Wolc, Iowa State University
  • Dorian J. Garrick, Iowa State University
  • Rohan L. Fernando, Iowa State University
  • Susan J. Lamont, Iowa State University
  • Jack C. M. Dekkers, Iowa State University
  • Andreas Kranis, Aviagen Ltd.
  • Kellie A. Watson, Aviagen Ltd.
Extension Number
ASL R2807
Publication Date
2013
Topic
Poultry
Summary and Implications

In this study, a commercial broiler chicken line was used to verify the feasibility and accuracy of genomic selection using an evenly spaced low-density marker panel. Body weight and hen house production (the cumulative egg production over the laying period, up to 22 weeks or until culled) were used as example traits. The training population included 2,302 birds, of which 1,259 were genotyped using a high-density marker panel with 36,455 markers across the genome, and the other 1,043 birds were genotyped with a low-density marker panel with 384 markers. The validation population included 3,720 birds genotyped with the lowdensity marker panel. A rule-based method combined with a Gibbs sampler was used to impute missing genotypes for the birds genotyped at low-density. Several methods were employed to predict genomic estimated breeding values for validation birds. Results showed that accuracy of genomic prediction was 7–8% higher compared to estimated breeding values from pedigree for body weight, and 4% higher for hen house production. We conclude that genomic selection can be implemented with low-density marker panels combined with imputation.

Copyright Holder
Iowa State University
Language
en
Citation Information
Chunkao Wang, David Habier, Anna Wolc, Dorian J. Garrick, et al.. "Application of Genomic Selection Using an Evenly Spaced Low-density Marker Panel in Broiler Chickens" (2013)
Available at: http://works.bepress.com/susan_lamont/26/