Mapping Quantitative Trait Loci for Meat Quality on Pig Chromosome 3, 4 and 7

  • Zuo, Bo ;
  • Xiong, YuanZhu ;
  • Su, YuHong ;
  • Deng, ChangYan ;
  • Zheng, Rong ;
  • Jiang, Siwen
  • Received : 2002.07.02
  • Accepted : 2002.11.04
  • Published : 2003.03.01


The objective of this study was to localize QTL affecting meat quality in a pig family of three generations. All animals were genotyped for twenty-four microsatellites on SSC3 (Sus scrofa chromosome 3), SSC4 and SSC7. One hundred and forty $F_2$ offsprings were scored for eleven meat quality traits. Least square regression interval mapping revealed quantitative trait loci (QTL) effect for meat pH (m. Semipinalis Capitis, SC) on SSC4 and SSC7; for moisture (m. Longissimus Dorsi, LD) on SSC3. Furthermore, there was suggestive evidence for a QTL on SSC4 affecting intramuscular fat (IMF) content that nearly approached the chromosomewise (p=0.05) significance threshold.


Genome Scan;Quantitative Trait Loci (QTL);Meat Quality;Pigs


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