EN
The performed semi-intensive fattening the Red-White bulls with different share of the HF blood /25, 50, 62,5 and 75%/ showed that the crossbreds with more than 50% HF had higher body measurements but worse indices of body conformation, in comparison with the Red-White bulls. The highest body weights at 18 months of age had the crossbreds F₁ - 499,7 kg as well as the highest daily weight gains - 936 g. The group of F₁ crossbreds was the most effective in feed conversion. The animals in this group used 6,9 oat units, 695 g total digestible protein and 7,53 kg dry matter per 1 kg of body weight gain.