The aim of the research is to study the influence of different seasons of birth on the productivity of Hereford bulls for the implementation of various technological solutions. The object of the study were Hereford bulls from birth to 16 months of age in LLC «Andrianovsky» of the Republic of Khakassia. By pairing custom-made 100 cows with the bull in 2015-2016 was obtained 53 bull. Of these, 2 groups of 20 bulls were formulated for control cultivation: 1st-animals born from January to April, and 2nd - from October to December. Assessment of the dynamics of live weight of test bulls of both groups shows that the average age of 16 months met the requirements of the elite class. While significant differences between the groups in live weight over the accounting periods was not observed. Bulls of the 1st group had a live weight of 462.9±10.9 kg, the 2nd group-438.6±11.2 kg. the Exception is only the average daily increase from 12 to 16 months. There was a significant superiority of bulls born in the period from January to April (P