Promotie

Genomic selection for improved crossbred performance

Promovendus M (Marcos) Soares Lopes
Promotor prof.dr.ir. JAM (Johan) van Arendonk
Copromotor prof.dr.ir. H (Henk) Bovenhuis
dr.ir. JWM (John) Bastiaansen
Copromotor dr. EF Knol
Organisatie Wageningen University, Animal Breeding and Genetics
Datum

vr 19 februari 2016 16:00 tot 17:30

Locatie Auditorium, building number 362
Generaal Foulkesweg 1
362
6703 BG Wageningen
0317-483592

Abstract


Crossbreeding programs are used intensively in livestock production systems. The aim of selective-breeding programs in many of these systems is to maximize crossbred performance, where selection is carried out within pure-lines using data from purebred animals. Genomic selection can be used to select purebreds for crossbred performance. Dominance is important in crossbreeding programs as it is the likely genetic basis of heterosis. The overall objective of this PhD project was to assess the possibilities of using dominance in genomic crossbreeding programs. Using stochastic simulations, response to selection in a two-way crossbreeding systems was investigated. Results showed that genomic selection can be used for efficient selection of purebreds for crossbred performance by addressing the factors that cause the genetic correlations between crossbreds and purebreds to be lower than one.