Abstract
The article presents the results of a study on the influence of some polymorphic genes on the productive and breeding qualities of Kalmyk cattle.The study was conducted at the premises of Agrofirma Turikpen LLC, located in the Zhambyl region of the Republic of Kazakhstan. The objects of the study were Kalmyk breed bulls and heifers up to 18 months of age. The total number of Kalmyk cattle in TOO Agrofirma Turikpen is 6961 heads. The herd is characterized by a rational structure, which reflects the strategic focus of the farm on reproduction, selection and breeding work and commercial meat production. Analysis of the weight and exterior characteristics showed that the animals are in good physiological condition, and their parameters correspond to those expected for this breed and age. The results obtained allow us to assert that the created conditions of keeping and feeding on the farm contribute to the stable growth and development of animals, which lays a solid foundation for further analysis of their genetic potential. Based on the results of the conducted research, it becomes clear that further research aimed at developing fundamental principles of zootechnical science within the framework of studying new polymorphisms of candidate genes will contribute to the development and optimization of gene identification methods, the formation of meat productivity and meat quality, as well as the commercial value of livestock. The results of such research allow for the early selection of promising animals for meat breeding and making decisions on the feasibility of using animals with the necessary genotypes for the selection process.