Abstract
<jats:p> In the conditions of modern animal husbandry, increasing the productivity of farm animals through the rational use of the genetic potential of purebred and mixed-breed young animals is of particular importance. One of the objectives of this work is to compare the productive and biological characteristics of purebred and mixed-breed young animals raised in the farms of the Abai region and East Kazakhstan region. The study examined growth and development indicators, body weight, average daily gains, livestock safety, as well as some adaptive features of animals. The data obtained made it possible to more fully assess the influence of the origin of young animals on the formation of their productive qualities. It has been established that mixed-breed young animals in some cases surpass purebred ones in terms of viability, growth rate and resistance to environmental conditions. This is due to the manifestation of the effect of heterosis, which helps to improve the adaptive abilities and increase the overall productivity of animals. At the same time, purebred young animals are distinguished by more stable hereditary traits, predictable productive qualities and uniformity of indicators, which is important in breeding work. Such animals allow for more accurate breeding and the consolidation of valuable economically useful traits in subsequent generations. The analysis of biological features has shown that the conditions of maintenance, feeding and climatic factors of the Abai region and East Kazakhstan region have a significant impact on the formation of productive qualities of both purebred and mixed-breed young animals. The rational organization of breeding technology, proper feeding and veterinary care make it possible to maximize the genetic potential of animals, regardless of their origin. The results obtained confirm the expediency of using mixed—breed young animals in commercial farms to increase the economic efficiency of production, and purebred ones for breeding purposes. The research materials can be used in the practice of livestock farms in the development of breeding and production programs to further increase the efficiency of the livestock industry and improve the technology of raising young animals in modern production conditions.</jats:p>