Cattles' farming for meat is an activity specific for Romanian animal breeding sector. Generally, beef cattle farmers acquire calves from the local population. The condition and welfare of calves can be determined based on weight gain and haematological indices. The purpose of our research was to determine the growth dynamic of calves subjected to fattening and to determine the physiological status on growth stages, by haematological investigations. Our research was conducted at the SC ITL AGROCOMPLEX farm -Lechinţa, Bistriţa-Năsăud County. Growth indices (TG -total gain; ADG -average daily gain) were determined based on successive measurements and weighing. The physiological status was determined by haematological analyses (WBC, RBC, HGB, HCT, MCV, MCH, MCHC, leukocyte formula). The experiment lasted for 33 days, 10 calves being studied. The initial mean weight was 53.5±0.513 kg, and the final mean weight was 91.7±0.445 kg, resulting a total gain (TG) of 38.