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Mapping quantitative trait loci for principal components of bone measurements and osteochondrosis scores in a wild boar × Large White intercross

Published online by Cambridge University Press:  01 April 2000

L. ANDERSSON-EKLUND
Affiliation:
Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Box 7023, S-750 07 Uppsala, Sweden
H. UHLHORN
Affiliation:
Department of Anatomy and Histology, Swedish University of Agricultural Sciences, Box 7023, S-750 07 Uppsala, Sweden
N. LUNDEHEIM
Affiliation:
Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Box 7023, S-750 07 Uppsala, Sweden
G. DALIN
Affiliation:
Department of Anatomy and Histology, Swedish University of Agricultural Sciences, Box 7023, S-750 07 Uppsala, Sweden
L. ANDERSSON
Affiliation:
Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Box 7023, S-750 07 Uppsala, Sweden
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Abstract

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Data on osteochondrosis and femur dimensions from 195 F2 pigs from a wild boar × Large White intercross were analysed with the aim of detecting quantitative trait loci (QTLs) for normal and disturbed bone formation. The information from numerous recorded traits was summarized by principal component analysis and analysed by least-squares interval mapping. An increase in the proportion of wild boar alleles across the genome increased length versus width of femur and reduced the prevalence of osteochondrosis. The presence of QTLs with an impact on femur dimensions was indicated on chromosomes 2, 4, 16 and 17 and on osteochondrosis on chromosomes 5, 13 and 15. A substantial effect of the chromosome 5 QTL calls for further studies within commercial populations to evaluate whether marker-assisted selection could be used to reduce the prevalence of osteochondrosis.

Type
Research Article
Copyright
© 2000 Cambridge University Press
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Mapping quantitative trait loci for principal components of bone measurements and osteochondrosis scores in a wild boar × Large White intercross
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