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Quantitative trait loci for fatness at growing and reproductive stages in Iberian × Meishan F 2 sows
Author(s) -
Tomás A.,
Ramírez O.,
Casellas J.,
Muñoz G.,
Sánchez A.,
Barragán C.,
Arqué M.,
Riart I.,
Óvilo C.,
Noguera J. L.,
Amills M.,
Rodríguez C.
Publication year - 2011
Publication title -
animal genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.756
H-Index - 81
eISSN - 1365-2052
pISSN - 0268-9146
DOI - 10.1111/j.1365-2052.2010.02169.x
Subject(s) - quantitative trait locus , biology , genetics , genetic architecture , chromosome , trait , genome , zoology , gene , computer science , programming language
Summary 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.