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.: Home > Animal Science Papers and Reports > 2004 > Volume 22 Number 4 > Maria Koوwin-Podsiad³a1, Jolanta Kury³2, El؟bieta Krzêcio1, Katarzyna Antosik1, Andrzej Zybert1, Halina Sieczkowska1

An association between genotype at the CAST (calpastatin) locus and carcass quality traits in porkers free of RYR1T allele*

Maria Koوwin-Podsiad³a1, Jolanta Kury³2, El؟bieta Krzêcio1, Katarzyna Antosik1, Andrzej Zybert1, Halina Sieczkowska1
1 Department of Pig Breeding and Meat Evaluation, University of Podlasie, Prusa 14, 08-110 Siedlce, Poland 2 Polish Academy of Sciences Institute of Genetics and Animal Breeding, Jastrzêbiec, 05-552 Wَlka Kosowska
Abstract :

An attempt is presented at determining the significance of associations between carcass quality traits and the genotype of pigs at locus CAST (calpastatin). Used were 397 porkers free of the RYR1T allele, of which 91 were purebred Landrace and the remaining were crossbreds: 65 Landrace پ~ Yorkshire, 129 Landrace پ~ Duroc, 83 [(Landrace پ~ Yorkshire) پ~ Duroc] and 29 [(Landrace پ~ Yorkshire) پ~ (Duroc پ~ Pietrain)]. Animals differing as regards genotype for each of the three CAST mutations analysed (identified by enzymes HinfI, MspI i RsaI) differed significantly in the weight of loin (not related to sex) and/or ham. Moreover, the positive effect of one the CAST gene variants on the loin weight was accompanied by its negative effect on ham weight, though the meat content of carcass remained unchanged. This observation indicates that the activity of the given calpastatin molecular variant depends on the muscle type (white muscle of loin, red muscle of ham). The CAST gene variant favourable for the loin weight proved to be favourable also for the shoulder weight. Carcasses of porkers with genotype AA as regards the gene CAST mutation identified by enzyme RsaI were longer by 2.04 cm than those from animals of genotype BB (P.0.05). It is concluded that the CAST genotype could be used in selection of pig lines for increased ham weight (animals of genotype BB at loci CAST/HinfI and CAST/MspI) or loin weight (animals of genotype AA at loci CAST/HinfI and CAST/MspI as well as BB at locus CAST/RsaI).

Keywords :
calpastatin gene / candidate gene/ carcass quality/ gene polymorphism / pigs

Date Deposited : 11 Aug 2011 13:02

Last Modified : 11 Aug 2011 13:02

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Volume 22, Number 4, - 2004

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