Growth response and nutrient digestability by Clarias isheriensis (Sydenham, 1980) fed varying levels of dietary coffee pulp as replacement for maize in low-cost diets

Feeding and digestibility studies were conducted in concrete ponds to evaluate the use of coffee (Coffea robusta) pulp as partial and total replacements for yellow maize in low-cost diets for the catfish, Clarias isheriensis (Sydenham, 1980). The percentages of dietary coffee pulp inclusion were 0 (diet 1, control), 10 (diet 2), 20 (diet 3) and 30 (diet 4). All the diets were formulated to contain 37% crude protein using cheap, locally available feed ingredients, and fed daily to experimental fish in replicated dietary treatments at 2–10% of fish biomass for 150 days. Fish survival was high, consequent upon good water quality in all treatments. There were significant differences (P