The experiment was carried out in Institute of Animal Production Experimental Station Grodziec Śl. 45 bulls divided into 3 groups ware observed: group I - Red and White bulls as control, group II - crossbred (Red and White x SRB) x A, group III - crossbred (Red and White x A) x SRB. The results obtained indicated that the three- breeds bulls with higer level of Ayrshire or SRB blood characterized a slight downfall of fattening value in comparison to the Red and White bulls. However, the slaughter value of both crossbred groups was similar to purebred group.