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- Title
Mapping QTL for porcine muscle fibre traits in a White Duroc × Erhualian F<sub>2</sub> resource population.
- Authors
Li, W. B.; Ren, J.; Zhu, W. C.; Guo, B. L.; Yang, B.; Liu, L. T.; Ding, N. S.; Ma, J. W.; Li, L.; Huang, L. S.
- Abstract
Muscle fibre traits are related with meat quality in meat animals. In this study, a whole-genome scan with 183 microsatellite markers covering the pig genome was performed to identify quantitative trait loci (QTL) for cross-sectional area, numerical percentage and relative area of type I, IIA and IIB myofibres, fibre number per square centimetre and total fibre number in the longissimus muscle by using 120 F2 animals in a White Duroc × Erhualian intercross. In total, 20 QTL were mapped on pig chromosomes (SSC) 1, 2, 7, 8, 9, 11, 15, 16 and X, of which eight reached genome-wide significance levels and explained large proportions (6.53–34.63%) of phenotypic variance. Five QTL detected in this study confirmed the previous QTL reports and the others were detected for the first time. Chinese Erhualian alleles are generally associated with muscle fibre traits favourable for meat quality.
- Subjects
MEAT quality; MICROSATELLITE repeats; MUSCLES; SWINE breeds; ANIMAL products
- Publication
Journal of Animal Breeding & Genetics, 2009, Vol 126, Issue 6, p468
- ISSN
0931-2668
- Publication type
Article
- DOI
10.1111/j.1439-0388.2009.00805.x