A second mutant allele (V199I) at the PRKAG3 (RN) locus - II. Effect on colour characteristics of pork loin

Abstract

Three alleles at the PRKAG3 (RN) locus that influence the glycogen content of pork were found to be segregating in Hampshire x Landrace crossbred pigs, RN-, rn(+) as well as second mutant allele V 1991 (here denoted rn*). The effect of these three alleles on ultimate pH, pigment content, internal reflectance (FOP), surface colour measured by tristimulus colorimetry (L*, a*, b*) and fractions of deoxymyoglobin (Mb), oxymyoglobin (MbO(2)) and metmyoglobin (MetMb) of pork loin was studied. Moreover, the effect of sex, entire male versus female pigs, on these traits was also analysed. The three PRKAG3 alleles affected ultimate pH, internal reflectance, colour and distribution of myoglobin derivatives of pork loin, while the pigment content was not influenced. Ultimate pH values of loins from the three genotypes were found to be in the order RN-/- genotypes < rn(+)/rn(+) genotype < rn(+)/ genotype rn(+)/rn(+) genotype. The internal reflectance in the loin was found to be in the order RN-/- genotypes

Published in

Meat Science
2004, volume: 66, number: 3, pages: 621-627
Publisher: ELSEVIER SCI LTD

SLU Authors

• Andersson, Leif

  • Department of Animal Biosciences, Swedish University of Agricultural Sciences
    

• Lundström, Kerstin

  • Department of Molecular Sciences, Swedish University of Agricultural Sciences
    

• Enfält, Ann-charlotte

  • Department of Molecular Sciences, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Food Science
Veterinary Science
Animal and Dairy Science

Publication identifier

• DOI: https://doi.org/10.1016/S0309-1740(03)00180-3

Permanent link to this page (URI)

https://res.slu.se/id/publ/3750