J. Anim Sci.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Varona, L.
Right arrow Articles by Noguera, J. L.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Varona, L.
Right arrow Articles by Noguera, J. L.
J. Anim. Sci. 2005. 83:301-307
© 2005 American Society of Animal Science

ANIMAL GENETICS

Bayesian analysis of quantitative trait loci for boar taint in a Landrace outbred population1

L. Varona*,2, O. Vidal{dagger}, R. Quintanilla*, M. Gil{ddagger}, A. Sánchez{dagger}, J. M. Folch{dagger}, M. Hortos{ddagger}, M. A. Rius{ddagger}, M. Amills{dagger} and J. L. Noguera*

* Área de Producció Animal, Centre UdL-IRTA, 25198 Lleida, Spain; and {dagger} Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain; and and {ddagger} Centre de Tecnologia de la Carn, IRTA, 17121 Monells, Girona, Spain

2 Correspondence—phone: 34-973-702637; fax: 34-973-238301; e-mail: luis.varona{at}irta.es.

The genetic basis of the main components of boar taint was investigated in intact male pigs in a commercial population. We analyzed fat androsten-one and skatole concentrations from 217 males of an outbred Landrace population. Records were normalized using a logarithm transformation and tested for normality using a Wilk-Shapiro test. Bayesian analysis was then used to map QTL in 10 candidate regions previously selected on chromosomes 1, 2, 3, 4, 6, 7, 8, 9, 10, and 13. The criterion for QTL detection was the Bayes factor (BF) between polygenic models with and without QTL effects. Both traits had considerable genetic determination, with posterior means of total heritabilities ranging from 0.59 to 0.73 for androstenone and from 0.74 to 0.89 for skatole. Positive evidence for a fat skatole QTL was detected on SSC6 (BF = 5.16); however, no QTL for androstenone were found in any of the 10 chromosomal regions analyzed. With the detection of a QTL for the fat skatole concentration segregating in this population, marker-assisted selection or even gene-assisted selection could be used once the causal mutation of the QTL was identified.

Key Words: Androstenone • Bayes Factor • Boar Taint • Quantitative Trail Loci • Skatole






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2005 by the American Society of Animal Science.