EN
The experiment was carried out on 72 fattening pigs divided into 4 experimental groups. The control mixture /I/ comprised soybean meal. The mixtures given in II, III and IV group contained repeseed meal supplemented with 3 and 6% of pea in II and III group respectively. Wheat meal in groups III and IV was replaced by rye meal. The other components of mixtures were the same. Weight gain of fattening pigs in groups II, III, IV was nearly the same and only slightly lower then that in the control /P < 0.05/. In the groups given mixtures supplemented with ground pea increase of feed intake per kg of weight gain was noted. The presence of rapeseed meal in the mixtures resulted in increasing of thyroid gland weight /P < 0.05/. The results of the carcass evaluation did not differ significantly between the groups. In group IV the digestibility coefficient of nitrogen components was 6% lower compared with that in other groups but it did not effect nitrogen retention. Rapeseed meal combined with ground pea in the mixtures resulted in the increase of apparent digestibility and retention of Ca. The data demonstrated that rapeseed meal can replace soybean meal in concentrate mixtures for fattening pigs.