Identification of carcass and meat quality quantitative trait loci in a Landrace pig population selected for growth and leanness

O. Vidal, J. L. Noguera, M. Amills, L. Varona, M. Gil, N. Jiménez, G. Dávalos, J. M. Folch, A. Sánchez

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54 Citations (Scopus)

Abstract

The identification of QTL related to production traits that are relevant for the pig industry has been mostly performed by using divergent crosses. The main objective of the current study was to investigate whether these growth, fatness, and meat quality QTL, previously described in diverse experimental populations, were segregating in a Landrace commercial population selected for litter size, backfat thickness, and growth performance. We have found QTL for carcass weight (posterior P > 0.75), cutlet weight (posterior P > 0.99), weight of ham (posterior P > 0.75), shoulders weight (posterior probability > 0.99), and shear firmness (posterior P > 0.99) on pig Chromosome 2. Moreover, QTL with posterior P > 0.75 for fat thickness between the 3rd and 4th ribs (Chromosome 7), rib weights (Chromosome 8), backfat thickness (Chromosomes 8, 9, and 10), and b Minolta color component (Chromosome 7) were identified. These results indicate that commercial purebred populations retain a significant amount of genetic variation, even for traits that have been selected for many generations. ©2005 American Society of Animal Science. All rights reserved.
Original languageEnglish
Pages (from-to)293-300
JournalJournal of Animal Science
Volume83
Issue number2
DOIs
Publication statusPublished - 1 Feb 2005

Keywords

  • Pigs
  • Quantitative Trait Loci
  • Selected Population

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