061
Maximizing crossbred performance through purebred genomic selection

Monday, August 18, 2014: 5:15 PM
Bayshore Grand Ballroom D (The Westin Bayshore)
Hadi Esfandyari , Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
Anders Christian Sørensen , Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, Tjele, Denmark
Piter Bijma , Animal Breeding and Genomics Centre, Wageningen University, Wageningen, Netherlands
Recorded Presentation (flv)
Abstract Text:

Genomic selection (GS) can be used to select purebreds for crossbred performance (CP). As dominance is the likely genetic basis of heterosis, explicitly including dominance in the GS model may be beneficial for selection of purebreds for CP, when estimating allelic effects from pure line data. The objective of this study was to investigate the benefits of GS of purebreds for CP based on purebred information. Results demonstrate that when at least one of the purebreds involved in a two way crossbreeding system was selected for CP, crossbred offspring had better performance than when selection in both breeds was for purebred performance. Under the hypothesis that crossbreds differ from purebreds due to dominance, GS can be applied to select purebreds for CP without crossbred data, by using a dominance model.

Keywords:

genomic selection

crossbreeding

dominance

See more of: Improving accuracy of genomic prediction
See more of: Genetic Improvement Programs: Selection using molecular information
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