In this study, the acceptability of 21-day-old cassava peels ensiled with spent brewer's grains was investigated along with its qualitative properties and hydrocyanic acid content. For the manufacture of silage diets, cassava peels (CPL) and brewers' wasted grain (BSG) were combined as follows: 100% CPL (Diet 1), 50% CPL + 50% BSG (Diet 2), and 40% CPL + 60% BSG (Diet 3). The pH of the silage ranged from 3.76 - 4.63. Diet 1 had a higher aroma of alcohol than the other silages, which were all typically alcoholic. The value of crude protein (CP) increased when more BSG was included. From the analysis, it was shown that the cyanide content of cassava peels reduced to 15.18 mg kg-1 when ensiled from 187.50 mg kg-1 of the unensiled cassava peels. This indicates that ensiling reduced the antinutritional factor present in the cassava peels. The result of acceptability trials showed that there was a significant difference (p < 0.05) in feed dry matter (DM) intake (ranged 311.0 – 514.5 g d-1) with diet 3 recording the highest significant (p < 0.05) value of 514.5 g d-1. Diet 3 showed good quality silage, enhanced crude protein composition and could support small ruminants during off periods as against sole feeding of cassava peels. Keywords: Cassava peels, brewers’ spent grains, silage, hydrocyanic acid.

The leaves of Enterolobium cyclocarpum contain secondary metabolites which have beneficial and detrimental effects on the animals consuming them. This experiment was thus designed to investigate these effects on the growth performance, carcass, and meat sensory characteristics of WAD bucks fed concentrate diets containing varying levels of Enterolobium cyclocarpum leaves. Harvested leaves of Enterolobium cyclocarpum (EC) were wilted for 12 to 36 hours, shredded, and incorporated into concentrate diets. Diet 1 contained no EC (0%), while Diets 2, 3 and 4 contained 7.50, 15.00 and 22.50% EC leave, respectively. The crude protein content of the diets ranged from 16.45 to 17.50% and differed significantly (p<0.05). The concentration of tannin (24.02, 28.93 and 29.71 mg/100g) and oxalate (113.15, 96.64 and 142.55 mg/100g) in diets 2 to 4 differed significantly (p<0.05) across dietary treatments. Bucks fed dietary 15% EC leaves (Diet 3) had the highest final live weight of 8.83kg which was statistically similar (p>0.05) to the final weight of bucks fed the control diet (7.73kg; Diet 1), 7.50% EC leave diet (7.33kg; Diet 2) but higher than (p<0.05) 22.50% EC leaves diet (5.65kg; Diet 4). Some internal organs (kidney, heart, and diaphragm) had significant changes in their relative weight across the treatments with diet 3 (15% EC leaves) recording the lowest values. The kidney weight of bucks fed diet 3 (0.64%) compared favourably with the control (0.61%), while the heart and diaphragm weight of bucks fed diet 3 (0.99 and 0.61%) were quite lower than those fed the control diet (1.05 and 0.67). Similarly, meat from bucks fed diet 3 was significantly (p<0.05) adjudged the most preferred, possessing the best aroma, flavor, juiciness, and tenderness. Thus, dietary EC leaves for WAD goats should not exceed 15% for better growth performance, carcass yield, and sensory characteristics.