title: Quantitative trait loci for fatness at growing and reproductive stages in Iberian × Meishan F(2) sows.
abstract: A considerable number of fatness QTL have been identified in growing pigs, but there is a lack of knowledge about the genetic architecture of this trait in gilts and sows. We have performed a genome scan, in 255 Iberian × Meishan F(2) sows, for backfat thickness (BF) at 150 (BF(150) ) and 210 (BF(210)) days of age, 30 days after conception (BF(30)) and 7-10 days before farrowing (BF(bf)). We have found one BF150 QTL in SSC6 (120 cM) that was highly significant (P < 0.001) at the chromosome-wide level and suggestive at the genome-wide level (P < 0.1). Ten additional chromosome-wide significant QTL were found for sow BF(150) (SSC1, SSC13), BF(210) (SSC6, SSC8, SSC15), BF(30) (SSC5, SSC6) and BF(bf) (SSC1, SSC6, SSC13). The location of several of the BF QTL varied depending on the growing and reproductive status of the sow, suggesting that part of these genetic effects may have a temporal pattern of phenotypic expression.
authors: Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain. Anna.tomas@caubet-cimera.es
authors: A
authors: A
authors: Tomás
authors: O
authors: O
authors: Ramírez
authors: J
authors: J
authors: Casellas
authors: G
authors: G
authors: Muñoz
authors: A
authors: A
authors: Sánchez
authors: C
authors: C
authors: Barragán
authors: M
authors: M
authors: Arqué
authors: I
authors: I
authors: Riart
authors: C
authors: C
authors: Óvilo
authors: J L
authors: JL
authors: Noguera
authors: M
authors: M
authors: Amills
authors: C
authors: C
authors: Rodríguez
mesh_terms: D050154:Adiposity; D000818:Animals; D002874:Chromosome Mapping; D033481:Chromosomes, Mammalian; D040641:Quantitative Trait Loci; D034421:Sus scrofa / Q000235:genetics* / Q000502:physiology