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KMID : 1025520030450060939
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Journal of Animal Science and Technology
2003 Volume.45 No. 6 p.939 ~ p.948
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Linkage Map and Quantitative Trait Loci(QTL) on Pig Chromosome 6
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이혜영/Lee, H. Y.
최봉환/김태헌/박응우/윤두학/이학교/전광주/Choi, B. H./Kim, T. H./Park, E. W./Yoon, D. H./Lee, H. K./Jeon, G. L.
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Abstract
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The objective of this study was to identify the quantitative traits loci(QTL) for economically important traits such as growth, carcass and meat quality on pig chromosome 6. A three generation resource population was constructed from cross between Korean native boars and Landrace sows. A total of 240 F_(２) animals were produced using intercross between 10 boars and 31 sows of F_(１) animals. Phenotypic data including body weight at 3 weeks, backfat thickness, muscle ?, shear force and crude protein level were collected from F_(２) animals.
Animals including grandparents(F_(０)), parents(F_(１)) and offspring(F_(２) were genotyped for 29 microsatellite markers and PCR-RFLP marker on chromosome 6. The linkage analysis was performed using CRI-MAP software version 2.4(Green et al., 1990) with FIXED option to obtain the map distances. The total length of SSC6 linkage map estimated in this study was 169.3cM. The average distance between adjacent markers was 6.05cM. For mapping of QTL, we used F_(２) QTL. Analysis Servelt of QTL express, a web-based QTL mapping tool(http：／／qtl.cap.ed.ac.uk).
Five QTLs were detected at 5％ chromosome-wide level for body weight of 3 weeks of age, shear force meat ? at 24 hours after slaughtering, backfat thickness and crude protein level on SSC6.
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