Detection and Localization of Quantitative Trait Loci Affecting Fatness in Broilers
- Jennen, D.G.J.
- Vereijken, A.L.J.
- Bovenhuis, H.
- Crooijmans, R.P.M.A.
- Veenendaal, A.
- Poel, van der, J.J.
- Groenen, M.A.M.
DOIAbstract
A cross between 2 genetically different outcross broiler dam lines, originating from the White Plymouth Rock breed, was used to produce a large 3-generation broiler population. This population was used to detect and localize QTL affecting fatness in chicken. Twenty full-sib birds in generation 1 and 456 full-sib birds in generation 2 were typed for microsatellite markers, and phenotypic observations were collected for 3 groups of generation 3 birds (~1,800 birds per group). Body weight, abdominal fat weight, and percentage abdominal fat was recorded at the age of 7, 9, and 10 wk. To study the presence of QTL, an across-family weighted regression interval mapping approach was used in a full-sib QTL analysis. Genotypes from 410 markers mapped...
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