Genetic potential of cattle under industrial livestock conditions

The article presents an algorithm for applying the genetic potential of cattle based on the inherent genes that ensure the state of health and productivity in the conditions of industrial animal husbandry. The milk productivity of cows, like all signs of a living organism, is determined by the set and combination of genes in DNA. The formation of milk productivity of cows is influenced by several genes, i.e. milk production depends on the additive action of genes. The purpose of the research was to develop practical recommendations for increasing the quantity and improving the quality and safety of livestock products based on the genetic potential in the conditions of the North Kazakhstan region. When breeding with cows aimed at increasing the signs of milk productivity, it is important that the genotype accumulates “high productivity genesˮ that animals inherit from their parents. Thus, when selecting parental pairs, it is necessary to take into account the level of development of the trait in the ancestors, in order to form the desired qualities in the offspring. But regardless of the concentration of “high productivity genesˮ in the genotype of the animal, the realization of the genetic potential of productivity is possible only under favorable conditions for feeding and keeping. As a result of the assessment, it was found that the first-calf heifers of the daughter of Holstein cows and the Simmental bull (H×S) turned out to be more productive, more milk from them was obtained in the first 90 days and in 305 days (full lactation), their milk also contained a little more dry matter, calcium and phosphorus, milk had an insignificant density. The highest amount of fat in milk is observed in first-calf heifers of daughters of Simmental cows and Simmental bulls (S×S) in comparison with other groups and averages 3.97%. In the course of the studies, the analysis showed that the breed of bulls from which the first-calf heifers originated has a significant impact on milk productivity.