One of the conditions for high productivity of cows is proper, balanced feeding during the rearing of replacement heifers. The purpose of the work was to study the dynamics of indicators of the rearing of replacement heifers under the conditions of an animal husbandry enterprise where Holstein cattle are bred. The results of the analysis of the indicators of the rearing of replacement heifers and their dynamics over 5 years of production activity of the farm breeding Holstein cattle have been presented in the article. It was established that the fi rst insemination of replacement heifers in 2021 was carried out at the age of 13 months with a live weight of 401 kg. The live weight of heifers was 69,7 % of the live weight of fi rst-calf heifers and 69,1 % of the live weight of mature cows, which corresponded to the norm. The live weight of the first-calf heifers during the analyzed period decreased from 580 kg in 2017 to 575 kg in 2021, i. e. by 5 kg or 0,9 %. The live weight of mature cows increased from 557 kg in 2017 to 680 kg in 2021, i. e. by 23 kg or 4,1 %. The live weight of all groups of animals met the minimum requirements for the Holstein breed. Thus, for 5 years of the production activity of the milk production enterprise, it was established that in the farm under study, the growth, development, and age of the fi rst insemination indicators corresponded to the standards for Holstein breed, which indicated a fairly high level of breeding work carried out by the specialists of the farm. An increase in the growth rate of young animals allows us to inseminate heifers at the age of 14–15 months, which reduces the age of the fi rst calving and increases the efficiency of the dairy cattle industry.