Quantitative trait loci for fatness at growing and reproductive stages in Iberian × Meishan F2 sows

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 F2 sows, for backfat thickness (BF) at 150 (BF150) and 210 (BF210) days of age, 30 days after conception (BF30) and 7-10 days before farrowing (BFbf). 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 BF150 (SSC1, SSC13), BF210 (SSC6, SSC8, SSC15), BF30 (SSC5, SSC6) and BFbf (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. © 2011 Stichting International Foundation for Animal Genetics.

Bibliographic Details

Main Authors:	Tomás, A., Ramírez, O., Casellas, J., Muñoz, G., Sánchez, A., Barragán, C., Arqué, M., Riart, I., Óvilo Martín, Cristina, Noguera, J. L., Amills, M., Rodríguez, C.
Format:	artículo biblioteca
Language:	English
Published:	John Wiley & Sons 2011
Subjects:	Backfat thickness, Quantitative trait locus, Reproduction, Sow,
Online Access:	http://hdl.handle.net/20.500.12792/4498 http://hdl.handle.net/10261/289607
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