The aim of this study was to determine the effect of the addition of pumpkin cake to the results of broiler chickens production. 360 chickens (Ross 308) were used in the study, randomly selected in 12 groups (4 controls and 8 trials). Chickens of control nutrition (K) were fed with commercial feed mixtures, while chickens from experimental feeding groups (P-5 and P-10) had part of the soybean meal replaced with pumpkin cake. Changes in body weight, consumption and mortality were monitored during the experimental feeding period. After 42 days, the broilers were slaughtered and measurements were performed to determine the feed conversion rate and the proportion of the basic parts in the carcass ratio. The mean body weight values of day 42 were statistically significantly different between all groups, with the largest weight being obtained in the control and the lowest in the P-10 test group. The total feed conversion rate of the feed mixture was the highest in the P-10, but without statistically significant difference. A somewhat higher feed conversion rate was established in the P-5 and P-10 trial but a statistically significant difference was found only between the control group and the P-10 experimental group. On the basis of the obtained results we can conclude that the addition of 5% and 10% pumpkin cake in the broiler feed mixture had a significant effect on the production results. However, for the final evaluation of the possibility of replacing part of the soybean meal, it is necessary to investigate the effect of the addition of pumpkin cake on the physicochemical properties of meat and on the economic results.