POLYMORPHISM OF GENES ASSOCIATED WITH MEAT QUALITY IN CATTLE (REVIEW)

Abstract

Optimization of beef production is a very complex and time-consuming
process, so progress in this area is possible due to the accuracy of determining the breeding
value of animals. Recently, significant changes have been taking place in world selective
breeding, which are associated with the advent of new technologies in assessing the breeding
value of farm animals based on molecular genetic markers of productivity economic traits,
which make it possible to improve the accuracy of assessing and predicting economically relevant characteristics of productive animals. The development of the livestock industry in
many countries is aimed at further accelerating of the selective breeding process with an increase in meat production and improvement of its quality. The review presents some of the
previously described candidate genes for use as molecular genetic markers of meat productivity in cattle. By now many polymorphisms in genes have been analyzed and associations
have been established with quantitative and qualitative indicators of beef from beef cattle.
Most of the economic traits in cattle are complex and they are influenced by multiple genes.
The possibilities, which are offered by molecular biology methods, can be used to analyze
entire genomes in search of polymorphisms that affect productive traits. Considering the economic and production tendencies in the consumption of meat products of high-quality beef,
the use of DNA markers in breeding programs to identify highly productive animals is of
great importance, which will help increase the profitability of the livestock industry. In this
regard, the expression of interest in research, which is aimed at identifying genetic polymorphism in genes associated with the formation of quantitative and qualitative parameters of
meat productivity in cattle, is a modern and relevant area of research in different breeds.