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.: Home > Animal Science Papers and Reports > 2007 > Volume 25 Number 4 > Pawe³ Urbaٌski1,*, Danuta K³osowska 2, Wojciech Kapelaٌski3, Gabriela Elminowska-Wenda2, Mariusz Pierzcha³a1, Konrad Walasik2, Joanna Bogucka2, Joanna Wyszyٌska-Koko1, Jolanta Kury³1

A relationship between the polymorphism in the coding and 5’ regions of the porcine MyoD genes and microstructure traits of longissimus lumborum muscle

Pawe³ Urbaٌski1,*, Danuta K³osowska 2, Wojciech Kapelaٌski3, Gabriela Elminowska-Wenda2, Mariusz Pierzcha³a1, Konrad Walasik2, Joanna Bogucka2, Joanna Wyszyٌska-Koko1, Jolanta Kury³1
1 Polish Academy of Sciences Institute of Genetics and Animal Breeding, Jastrzêbiec, 05-552 Wَlka Kosowska, Poland 2 Department of Animal Histology, University of Technology and Life Sciences in Bydgoszcz, Mazowiecka 28, 85-084 Bydgoszcz, Poland 3 Department of Pig Breeding, University of Technology and Life Sciences in Bydgoszcz, Mazowiecka 28, 85-084 Bydgoszcz, Poland
Abstract :

The MyoD family consists of four structurally related genes, products of which control the processes
of myogenesis. The objective of the study was to analyse the relations existing between selected
polymorphisms in the coding and 5پf flanking regions of the porcine MYOD1, MYF5 and MYOG
genes and microstructure of longissimus lumborum (LL) muscle. Torhyb Line [(Polish Large White
پ~ Polish Landrace) پ~ Pietrain] fatteners were used (n=115). The diameter (ƒتm) and content (%)
of slow-twitch oxidative (STO), fast-twitch oxidative (FTO), fast-twitch glycolytic (FTG) and
pathological fibres was determined. The relation between MyoD genotypes and microstructure
characteristics was analysed in a group of 93 fatteners of the CC or CT genotype at locus RYR1.
The pigs of TT genotype at RYR1 locus were excluded due to significant effect identified of that
genotype on the muscle microstructure. Sex appeared to have no significant effect on the muscle
microstructure traits. The significant effect on LL microstructure was identified regarding the locus
MYOD1. The C489T transition affected the diameter of FTO fibres, and the transversion G566C
affected the content of fibres FTO and FTG in a bundle. The mutation G566C may be interesting
for further studies, because it changes amino acid sequence from arginine to proline. In this study
a significant effect of the MYF5 and MYOG genotype on the LL muscle microstructure was not
identified.

Keywords :
gene polymorphism / MyoD genes / muscle fibres / muscle microstructure / pig

Date Deposited : 08 Aug 2011 12:49

Last Modified : 08 Aug 2011 12:49

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

Volume 25, Number 4, - 2007

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