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Asian-Australas J Anim Sci > Volume 18(11); 2005 > Article
Animal Breeding and Genetics
Asian-Australasian Journal of Animal Sciences 2005;18(11): 1524-1528.
DOI: https://doi.org/10.5713/ajas.2005.1524    Published online December 2, 2005.
Identification of Quantitative Traits Loci (QTL) Affecting Growth Traits in Pigs
T. H. Kim, B. H. Choi, H. K. Lee, H. S. Park, H. Y. Lee, D. H. Yoon, J. W. Lee, G. J. Jeon, I. C. Cheong, S. J. Oh, J. Y. Han
Abstract
Molecular genetic markers were used to detect chromosomal regions which contain economically important traits such as growth, carcass, and meat quality traits in pigs. A three generation resource population was constructed from a cross between Korean native boars and Landrace sows. A total of 240 F2 animals from intercross of F1 was produced. Phenotypic data on 17 traits, birth weight, body weights at 3, 5, 12, and 30 weeks of age, teat number, carcass weight, backfat thickness, body fat, backbone number, muscle pH, meat color, drip loss, cooking loss, water holding capacity, shear force, and intramuscular fat content were collected for F2 animals. Animals including grandparents (F0), parents (F1), and offspring (F2) were genotyped for 80 microsatellite markers covering from chromosome 1 to 10. Least squares regression interval mapping was used for quantitative trait loci (QTL) identification. Significance thresholds were determined by permutation tests. A total of 10 QTL were detected at 5% chromosome-wide significance levels for growth traits on SSCs 2, 4, 5, 6, and 8.
Keywords: QTL; Microsatellite Marker; Growth Traits; Pig


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