The aim of this study was to determine the age suitable for moving calves from individual to a group housing with regard to their performance, health and welfare. 48 Calf-bulls were placed in the individual hutches immediately after their birth. After then 16 calf-bulls were moved to group hutches in fours at the age of 15, 20 and 31 days. The qualitative parameters (behaviour, health) were evaluated by nonparametric tests, quantitative parameters (live weight, weight gain, starter intake) using ANOVA for repeated measurements in the TIBCO Statistica. The calves, of all ages placed into the group hutches, spent most of day time by lying and resting (62.9-66.4%). The calf-bulls reared in the group from 20th day of age sucked the body parts of other calves (p