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Journal of Heredity Advance Access originally published online on September 19, 2006
Journal of Heredity 2006 97(5):535-537; doi:10.1093/jhered/esl026
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© The American Genetic Association. 2006. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org.

Brief Communications

A Quantitative Trait Locus for Oleic Fatty Acid Content on Sus scrofa Chromosome 7

Younyoung Kim, Minyoung Kong, Yu Jin Nam, and Chaeyoung Lee

From the Ilsong Institute of Life Science, Hallym University, Anyang, Kyonggi-do 431-060, Korea

Address correspondence to C. Lee at the address above, or e-mail: clee{at}hallym.ac.kr.

A partial genome scan using microsatellite markers was conducted to detect quantitative trait loci (QTLs) for 10 fatty acid contents of backfat on 15 chromosomes in a porcine resource population. Two QTLs were discovered on Sus scrofa chromosome 4 (SSC4) and SSC7. The QTL on SSC4 was located between marker loci sw1336 and sw512, and this QTL was detected (P < 0.05) only for linoleic acid. Its position was in proximity of those mapped for linoleic acid content in previous studies. The QTL on SSC7 was mapped between markers swr1343 and sw2155, and it was significant (P < 0.05) only for oleic acid. A novelty of the QTL for oleic acid was suggested because the QTL was located far from any other QTLs previously mapped for fatness traits. The QTL on SSC7 explained 19% of phenotypic variation for oleic acid content. Further studies on fine mapping and positional comparative candidate gene analysis would be the next step toward better understanding of the genetic architecture of fatty acid contents.


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