The influence of the intensity of dairy cows growing on theirlongevity and lifetime productionhas been investigated. It has been found that with an increase in the live weight of heifers at the age of 6 months and an average daily gain in the period of 0–6 months, the longevity and lifetime production of cows increase.In particular, with an increase in the average live weight of heifers from 111 to 167 kg, and an average daily gain from 449 to 735 g, the longevity, productive lifespan and total lactation length of cows increases by 689–798, 812–922 and 704–790 days, respectively, lifetime milk production increases by 15105–16753 kg, lifetime milk fat and milk protein production – by 1097–1221 kg (P<0.001 in all cases). There is an increase in the longevity and lifetime production of cows with an increase in the average live weight of heifers at the age of 15 months from 241 to 338 kg (P<0.001), and the average daily gain at the age of 0–12 months – from 457 to 691 g (P<0.001).With a higher live weight and average daily gain, the indicators of longevity and lifetime production are significantly reduced (P<0.001).The strength of influence (ηx 2) of the live weight of heifers at the age of 6 and 15 months on longevity was 8.0–9.1%, lifetime production – 8.7–9.0%; the strength of influence of average daily gain of heifers at the age of 0–6 and 0–12 months on longevity was 10.7–15.9%, on lifetime production– 12.8–16.6%.