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.: Home > Animal Science Papers and Reports > 2007 > Volume 25 Number 1 > El؟bieta Krzêcio1, Maria Koوwin-Podsiad³a1, Jolanta Kury³2, Andrzej Zybert1, Halina Sieczkowska1, Katarzyna Antosik1

The effect of genotypes at loci CAST/MspI (calpastatin) and MYOG (myogenin) and their interaction on selected productive traits of porkers free of gene RYR1T. I. Muscling and morphological composition of carcass

El؟bieta Krzêcio1, Maria Koوwin-Podsiad³a1, Jolanta Kury³2, Andrzej Zybert1, Halina Sieczkowska1, Katarzyna Antosik1
1 Department of Pig Breeding and Meat Science, 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, Poland
Abstract :

The study aimed at determining whether pig carcass traits are significantly related to the genotypes
at loci CAST/MspI and MYOG and whether an effect exists of interaction between them as regards
muscling and morphological traits of carcass. The analyses were conducted on 397 porkers free of
gene RYR1T of the five following purebred and crossbred groups: Landrace, Landrace × Yorkshire,
Landrace × Duroc, (Landrace × Yorkshire) × Duroc, (Landrace × Yorkshire) × (Duroc × Pietrain)
– 91, 65, 129, 83, 29 animals, respectively. Genotype AA at locus CAST/MspI occurred to be the
most favourable as regards the traits of tenderloin, while genotype BB – as regards the traits of
ham. Similar relations were observed between the traits of tenderloin or ham and MYOG genotype.
No significant effect of interaction was identified between the CAST/MspI and MYOG genotypes as
regards carcass quality traits, but a CAST × MYOG × sex interaction did prove significant for the
weight of ham and shoulder.

Keywords :
calpastatin / carcass quality / myogenin / pig / porkers

Date Deposited : 08 Aug 2011 12:12

Last Modified : 08 Aug 2011 12:12

Official URL: http://www.ighz.edu.pl/

Volume 25, Number 1, - 2007

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