9th World Congress on Genetics Applied to Livestock Production
du 1 août 2010 au 6 août 2010
[en] mh allele ; Dual Purpose Belgian Blue ; Milk production
[en] Given that the mh allele causes the double muscling phenotype, this allele could also influence milk production traits of the dual purpose Belgian Blue cattle. However, all dual purpose Belgian Blue animals could not be genotyped. So, a new alternative strategy for the prediction of gene effects and especially their smooth integration into genetic evaluations based on an equivalent method was developed from existing theory. Developed equations were modified to allow that not all animals were genotyped. As expected, the mh allele had negative effects on milk production traits. For the first three lactations, the average estimated allelic substitution effects were -0.074 % fat content and -158.7 kg milk per lactation (305 days). Moreover, effects of mh allele were not constant during the lactation.
Région wallonne : Direction générale opérationnelle de l'Agriculture, des Ressources Naturelles et de l'Environnement - DGARNE