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Animal Biotechnology Volume 12, 2001 - Issue 2
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Original Articles

INTERVAL MAPPING OF CARCASS AND MEAT QUALITY TRAITS IN A DIVERGENT SWINE CROSS

A. A. Paszek Department of Veterinary PathoBiology, Food Animal Biotechnology Center, Program in Comparative Genomics, University of Minnesota, St. Paul, MN, 55108, U.S.A.
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P. J. Wilkie Department of Veterinary PathoBiology, Food Animal Biotechnology Center, Program in Comparative Genomics, University of Minnesota, St. Paul, MN, 55108, U.S.A.
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G. H. Flickinger Department of Veterinary PathoBiology, Food Animal Biotechnology Center, Program in Comparative Genomics, University of Minnesota, St. Paul, MN, 55108, U.S.A.
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L. M. Miller Department of Veterinary PathoBiology, Food Animal Biotechnology Center, Program in Comparative Genomics, University of Minnesota, St. Paul, MN, 55108, U.S.A.
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C. F. Louis Department of Veterinary PathoBiology, Food Animal Biotechnology Center, Program in Comparative Genomics, University of Minnesota, St. Paul, MN, 55108, U.S.A.
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G. A. Rohrer USDA- ARS, Meat Animal Research center (MARC) Clay Center, NE, 68933, U.S.A.
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L. J. Alexander Department of Veterinary PathoBiology, Food Animal Biotechnology Center, Program in Comparative Genomics, University of Minnesota, St. Paul, MN, 55108, U.S.A.
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C. W. Beattie Department of Veterinary PathoBiology, Food Animal Biotechnology Center, Program in Comparative Genomics, University of Minnesota, St. Paul, MN, 55108, U.S.A.
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L. B. Schook Department of Animal Sciences, University of Illinois at Urbana-Champaign, 1201 W. Gregory Drive, Urbana, IL, 61801, U.S.A.Correspondence[email protected]
 show all
Pages 155-165 | Published online: 01 Feb 2007
 
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Abstract

An autosomal scan of the swine genome with 119 polymorphic microsatellite (ms) markers and data from 116 F2 barrows of the University of Illinois Meishan x Yorkshire Swine Resource Families identified genomic regions with effects on variance in carcass composition and meat quality at nominal significance (p-value <0.05). Marker intervals on chromosomes 1, 6, 7, 8 and 12 (SSC1, SSC6, SSC7, SSC8, SSC12) with phenotypic effects on carcass length, 10th rib backfat thickness, average backfat thickness, leaf fat, loin eye area and intramuscular fat content confirm QTL effects identified previously based on genome wide significance (p-value<0.05). Several marker intervals included nominally significant (p-value<0.05) dominance effects on leaf fat, 10th rib backfat thickness, loin eye area, muscle pH and intramuscular fat content.

ACKNOWLEDGMENTS

This study was supported by USDA National Research Initiatives-Competitive Research Grant (No. 96-35205-3546). A generous gift from Babcock Swine, Inc. is sincerely appreciated.

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