Abstract
The objective of this paper was to determine the effect of the MYOG, MYF6 and MYOD1 genes on selected meat quality traits in crossbred pigs. The observation of these effects on the total amount of 20 indicators of meat quality traits was carried out on a sample of 124 slaughter pigs of cross-breed combinations Pietrain × (Large WhiteD × Landrace) and (Large WhiteS × Duroc) × (Large WhiteD × Landrace), all tested at the Test and Experiment Station of the Czech University of Life Sciences, Prague. The MYOG gene was discovered to have a significant effect on the water content in the ham and shoulder and on the intramuscular fat content in the shoulder. Concerning the MYF4 locus, the pigs of the AA genotype showed a higher content of intramuscular fat (P < 0.01) than the pigs of the BB genotype. The MYOD1 gene had a statistically significant effect on the water content in the ham and loin and on the muscle area of the belly (the belly fat share). Also, regarding the MYOD1 locus, the pigs of the AA genotype showed a higher lean meat content in the belly (P < 0.01) than the pigs of the BB genotype. Based on the results of this study, it can be stated that mutations in the MYOG, MYF6 and MYOD1 genes show a significant effect on the pork meat quality. Key words : Pig, meat quality, MyoD family genes
Highlights
In the last decade, there has been a notable progress observed in the area of the performance of a number of economically important traits characterising farm animals
The objective of this paper was to determine the effect of the MYOG, MYF6 and MYOD1 genes on selected meat quality traits in crossbred pigs
The observation of these effects on the total amount of 20 indicators of meat quality traits was carried out on a sample of 124 slaughter pigs of cross-breed combinations Pietrain × (Large WhiteD × Landrace) and (Large WhiteS × Duroc) × (Large WhiteD × Landrace), all tested at the Test and Experiment Station of the Czech University of Life Sciences, Prague
Summary
There has been a notable progress observed in the area of the performance of a number of economically important traits characterising farm animals This progress has been enabled by the connection of molecular genetics with artificial selection and introgression (Dekkers and Hospital, 2002). Despite the fact that most of these traits belong among quantitative traits, controlled by polygenes and factors of the outer environment, there was a high genetical gain achieved. This stands true even though the observable phenotypic qualities (breeding value of an individual) are a result of a complicated complex containing a number of factors and genes (Georges, 2007). The MRF genes are considered potential candidate genes for investigation of mutual interactions and their impact on the development of skeletal muscle tissue (Ujan et al, 2011)
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