The objectives of the study were to evaluate the performance and cost implications of feeding varying dietary levels of toasted bambara nut offal (TBO) (0, 20, 30 and 40kg) with supplementary enzyme, 2 enzyme levels, (0 and 0.02kg) to one hundred and twenty 6-weeks old unsexed commercial broiler chicks (Anak strain) that were randomly divided into eight (treatments) groups of 15 birds each. Feed intake increased (P<0.05) significantly while Av final body weight, Av daily weight gain, Av tot al weight gain, feed efficiency and protein efficiency ratio decreased (P>0.05) significantly with increasing levels of TBO in the diets. Total feed consumed increased (P<0.05) significantly with increasing levels of TBO in the diets. Revenue and gross profit decreased (P>0.05) significantly in diets containing 30 kg and 40 kg levels of TBO with or without enzyme while diet containing 20 kg level of TBO with enzyme recorded the best (P<0.05) revenue and gross profit. It was concluded that up to 20 kg TBO can be included in enzyme supplemented broiler finisher diet without adverse effects on the performance and production (cost) efficiency of broiler finisher birds.
