Study demonstrates frequency of marker gene complexes in Kazakh Whiteheaded beef cattle, suggesting enhanced breeding outcomes.
Modern livestock breeding faces a number of issues associated with the need to improve productivity and product quality, as well as with adaptation to changing environmental conditions. The paper aims to study the frequency of occurrence of desirable complex genotypes of marker genes in the Kazakh Whiteheaded beef cattle and their influence on productive qualities, which indeed is important for the development of breeding programs and increasing beef cattle breeding efficiency. The target of research is the Kazakh Whiteheaded meat cattle (n = 41) bred at Gigant agricultural production co-operative and collective farm, located in the Blagodarnensky Municipal District, Stavropol Krai. PCR-RFLP method was applied to carry out genetic studies. The successful selection of parental pairs (sire ? heifer) resulted in the appearance of animals (5 animals, or 25.0%) carrying complex genotypes with eleven (TGTTGHRFFGDF5TTIGF-1BBLEPCTGHVV) and ten (TGTTGHRFFGDF5TTIGF-1ABLEPCCGHVV, TGTTGHRFFGDF5TTIGF-1BBLEPCCGHVV) desirable marker alleles of the six genes. The young animals, in contrast to the maternal individuals, had no carriers of three desirable alleles and showed an increase in the proportion of individuals carrying six, five and four breeding-significant alleles. This opens up new opportunities for breeders for using genetic information to predict crossbreeding results more accurately and select the most promising animals for breeding.
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Gajiyev et al. (2025) studied this question.
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