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

AuthorsMuñoz, G.; Alcázar, E.; Fernández-Camacho, A. ; Barragán, Carmen; Carrasco Manzano, Juan Atanasio ; Pedro, E, de; Silió, L.; Sánchez, J. L.; Rodríguez, M. Carmen
Issue Date2011
CitationMeat Science 88: 169- 173 (2011)
AbstractPolymorphisms 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.
Identifiersdoi: 10.1016/j.meatsci.2010.12.018
issn: 0309-1740
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