Genetic Mapping of a Body Weight Trait in Chicken
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The indigenous chicken line, Satsumadori (SD), is characterized by slow growth and widely varied body weight. We carried out linkage analysis on chicken growth traits using a resource population between a SD male and a White Leghorn female, comprising 232 F2. We chose 72 microsatellite loci among 244 loci publicly available of 19 autosomal linkage groups, in terms of their utilities and locations. A quantitative trait loci (QTL) affecting body weight at 13 weeks was mapped at 122.8cM on chromosome 1 (LOD score=5.16). The closest loci were ADL19 and ADL192. The difference in body weight of F2 were associated with allele types of ADL19 and ADL192 (P<0.01). In 52 SD males, we found three alleles of ADL19, each of which was assumed to be associated with the body weight at 13 weeks (P=0.062). Therefore, ADL19 will be applicable to marker-assisted selection for body weight in SD-crossed commercial populations.
- Nihon Chikusan Gakkaiho
Nihon Chikusan Gakkaiho 71(2), 130-136, 2000-03-25
Japanese Society of Animal Science