Reference : Development of a new genetic evaluation model for carcass quality based on crossbred per...
Scientific congresses and symposiums : Paper published in a book
Life sciences : Animal production & animal husbandry
Life sciences : Genetics & genetic processes
http://hdl.handle.net/2268/71095
Development of a new genetic evaluation model for carcass quality based on crossbred performances of Piétrain boars in the Walloon Region of Belgium
English
Dufrasne, Marie mailto [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
Hammami, Hedi mailto [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
Jaspart, Véronique [Association wallonne des Eleveurs de Porcs > > > >]
Wavreille, José [Centre Wallon de Recherches agronomiques > > > >]
Gengler, Nicolas mailto [Université de Liège - ULg > Sciences agronomiques > Zootechnie >]
2010
Proceedings of the 9th World Congress on Genetics Applied to Livestock Production
Yes
No
International
9th World Congress on Genetics Applied to Livestock Production
1-6 August 2010
Leipzig
Germany
[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.
http://hdl.handle.net/2268/71095

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