Effects of porcine MC4R and LEPR polymorphisms, gender and Duroc sire line on economic traits in Duroc×Iberian crossbred pigs

Polymorphisms MC4R c.1426A>G (p.Asp298Asn) and LEPR c.2002C>T (p.Leu663Phe) have been associated in pigs with feed intake, growth and fatness. Our aims were to analyze how these polymorphisms influence production and quality traits in Duroc × Iberian crossbred pigs, and moreover evaluate how the effects of gender and Duroc line were affecting these traits. Significant effects of gender, Duroc sire line and LEPR c.2002C>T mutation, were detected on the main traits. LEPR c.2002T allele increased body weight (2.5 ± 0.7. kg), backfat thickness (1.5 ± 0.4. mm), loin intramuscular fat (0.7 ± 0.2 %), and lightness (1.0 ± 0.3); however it was decreasing premium cuts yield (-0.9 ± 0.2%). Allele c.2002T increased SFA (0.60 ± 0.12 %), and decreased MUFA (-0.35 ± 0.12%) and PUFA (-0.25 ± 0.06%). No significant effects of MC4R c.1426A>G SNP were identified. A genetic test based on the LEPR c.2002C>T SNP may be useful to select Duroc sires to reduce undesirable heterogeneity of carcasses and premium cuts of crossbred animals. © 2010 The American Meat Science Association.

Bibliographic Details

Main Authors:	Muñoz, G., Alcázar, E., Fernández, A., Barragán, C., Carrasco, A., de Pedro, E., Silió, L., Sánchez, J. L., Rodríguez, M. C.
Format:	journal article biblioteca
Language:	English
Published:	Elsevier 2011
Subjects:	MC4R, LEPR, Meat quality, Heavy pigs, Duroc, Iberian,
Online Access:	http://hdl.handle.net/20.500.12792/3047 http://hdl.handle.net/10261/293347
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