Campus Units

Animal Science

Document Type

Article

Publication Version

Published Version

Publication Date

2009

Journal or Book Title

Journal of Animal Science

Volume

87

Issue

5

First Page

1569

Last Page

1575

DOI

10.2527/jas.2008-1191

Abstract

To detect QTL for leg weakness and its related traits in pigs, a total of 1,484 F2 pigs were recorded for leg (at 76 and 213 d) and gait scores (at 153 and 223 d) in a White Duroc × Erhualian intercross. The length and weight of the biceps brachii muscle were measured after slaughter at 240 d. A genome scan was performed with 183 microsatellite markers in the population. A total of 42 QTL were detected, including 16 at the 1% genome-wide significant level and 6 at the 5% genome-wide significant level. Thirty-eight of the 42 QTL showed significant additive effects, and 14 had significant dominance effects. At least 2 QTL were detected for each trait except for leg score at 76 d, for which no QTL was identified. Some of the QTL for leg and gait scores confirmed previous findings. Eighteen QTL were detected for weight and length of the biceps brachii muscle. To our knowledge, this was the first report about QTL for weight and length of the biceps brachii muscle in pigs. Two chromosome regions each on SSC4 and SSC7 showed significant and multiple associations with both leg weakness and growth of the biceps brachii muscle, which are worthwhile for further investigation.

Comments

This is an article from Journal of Animal Science 87 (2009): 1569, doi:10.2527/jas.2008-1191. Posted with permission.

Copyright Owner

American Society of Animal Science

Language

en

File Format

application/pdf

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