Thirty lambs ranging in age between 5â€“6 months with live body weight 18± 0.5 kg were used in an experiment with 12-week periods to determine the effects of feeding diets containing untreated (U) or urea treated groundnut hull (T) with groundnut cake (GN), cotton seeds cake (CS) or fish by-products (FB) as source of protein in addition to other feed ingredients of molasses, sorghum, wheat bran, limestone and salt on growth performance. Treated groundnut hull was prepared by added 4g/kg DM urea to groundnut hull in a silo for a period of 6 weeks. Six concentrate rations; A (T × GN), B (T × CS), C (T × FB), D (U × GN), E (U × CS) and F (U × FB) were used. Daily feed intake (FI), daily weight gain (DWG) and final body weight (FBW) were significantly (P
Urea treatments, protein sources, groundnut hull, growth performance, N- retention, digestibility, rumen fermentation, sheep.