Mapping of quantitative trait loci on porcine chromosome 4

G A Walling, A L Archibald, J A Cattermole, A C Downing, H A Finlayson, D Nicholson, P M Visscher, C A Walker, C S Haley

Research output: Contribution to journalArticlepeer-review

Abstract

A F2 population derived from a cross between European Large White and Chinese Meishan pigs was established in order to study the genetic basis of breed differences for growth and fat traits. Chromosome 4 was chosen for initial study as previous work had revealed quantitative trait loci (QTLs) on this chromosome affected growth and fat traits in a Wild Boar x Large White cross. Individuals in the F2 population were typed for nine markers spanning a region of approximately 124 CM. We found evidence for QTLs affecting growth between weaning and the end of test (additive effect: 43.4 g/day) and fat depth measured in the mid-back position (additive effect: 1.82 mm). There was no evidence of interactions between the QTLs and sex, grandparents or F1 sires, suggesting that the detected QTLs were fixed for alternative alleles in the Meishan and Large White breeds. Comparison of locations suggests that these QTLs could be the same as those found in the Wild Boar x Large White cross.
Original languageEnglish
Pages (from-to)415-24
Number of pages10
JournalAnimal Genetics
Volume29
Issue number6
Publication statusPublished - Dec 1998

Keywords

  • Animals
  • Chromosome Mapping
  • Chromosomes
  • Female
  • Genotype
  • Male
  • Phenotype
  • Quantitative Trait, Heritable
  • Swine

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