Unpublished conference/Abstract (Scientific congresses and symposiums)
Development of a new genetic evaluation model for carcass quality based on crossbred performances of Piétrain boars in the Walloon Region of Belgium
Dufrasne, Marie; Hammami, Hedi; Jaspart, Véronique et al.
20109th World Congress on Genetics Applied to Livestock Production
 

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Abstract :
[en] In context of the development of the genetic evaluation system of Piétrain boars for crossbred performances, a genetic evaluation model was developed for the estimation of genetic merit of boars for backfat thickness (BF) and meat percentage (%meat). The model developed was a random regression model using linear splines on age which knots at 175, 200 and 250 days. Variance components were estimated by restricted maximum likelihood and Gibbs sampling. Estimated heritability from 150 to 300 days increased from 0.56 to 0.75 for BF and from 0.55 to 0.69 for %meat. Genetic correlation between BF and %meat varied between -0.90 and -0.93 from 150 to 300 days. According to the study of residuals, the developed model was considered to fit well the data especially between 175 and 250 days of age.
Disciplines :
Animal production & animal husbandry
Genetics & genetic processes
Author, co-author :
Dufrasne, Marie ;  Université de Liège - ULiège > Sciences agronomiques > Zootechnie
Hammami, Hedi ;  Université de Liège - ULiège > Sciences agronomiques > Zootechnie
Jaspart, Véronique;  Association Wallonne des Eleveurs de Porcs
Wavreille, José;  Centre Wallon de Recherches agronomiques
Gengler, Nicolas  ;  Université de Liège - ULiège > Sciences agronomiques > Zootechnie
Language :
English
Title :
Development of a new genetic evaluation model for carcass quality based on crossbred performances of Piétrain boars in the Walloon Region of Belgium
Publication date :
2010
Event name :
9th World Congress on Genetics Applied to Livestock Production
Event place :
Leipzig, Germany
Event date :
1-6 August 2010
Audience :
International
Available on ORBi :
since 02 September 2010

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