Genetics and Molecular Biology (Jan 2008)

Mapping of quantitative trait loci and confirmation of the FAT1 region on chromosome 4 in an F2 population of pigs

  • Kleibe de Moraes Silva,
  • Débora Martins Paixão,
  • Priscila Vendramini Silva,
  • Bruna Pena Solero,
  • Mario Sérgio Pereira,
  • Paulo Sávio Lopes,
  • Simone Eliza Facioni Guimarães

DOI
https://doi.org/10.1590/S1415-47572008000300013
Journal volume & issue
Vol. 31, no. 2
pp. 475 – 480

Abstract

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The objective was to map QTL on porcine chromosome 4 and to associate them with carcass and internal organ traits in an F2 population. The F1 population was produced by outbreed crossing, using two native Brazilian breed Piau boars and 18 commercial sows. A total of 617 F2 animals issued from 11 F1 boars and 54 F1 sows were typed for a total of five microsatellite markers. The data were analyzed by multiple regressions developed for the analysis of crosses between outbred lines, using the QTL Express software. Significant evidence for QTL was found for pig chromosome 4 regarding carcass and internal organ traits. All QTL were detected in the same region of the chromosome, designated FAT1.

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