Nutritional characterization of some tropical urban market crop wastes

摘要: Market crop wastes of banana (Musa acuminata) leaves and pseudo-stem sheaths, sweet potato (Ipomoea batatas) vines Solanum aethiopicum (traditionally known as nakati) were collected from three major markets in Kampala (Uganda). The evaluated for chemical composition during the dry wet seasons, rumen degradation using cannulated indigenous mature ewes, digestibility 12 intact growing male goats, 4–6 months old weighing 15.8 kg (S.D. 2.1). goats study kept metabolism cages fed sole diets, either fresh or wilted. Mean matter (DM) content was 97, 121, 197 216 g/kg nakati, leaves, respectively. Crude protein (CP) 34, 109, 112 114 DM similar among seasons based wastes. However, season had significantly higher CP lower NDFom ADFom. Chemical different (P<0.05) nakati. Effective degradability differed between wastes, averaging 0.43 (banana leaves), 0.47 (pseudo-stem sheaths) 0.56 (nakati) to 0.69 g/g incubated (sweet vines). intake, N retention not affected by wilting. Average intake 176, 270 559 g/day; 26, 30 63 g/day, while metabolizable energy (ME) 1.3, 1.7 5.1 MJ/day vines, (as a fraction intake) −0.51 0.62 0.39 organic (OM) digestibilities low, 0.52 0.49, high moisture nakati resulted low whereas rate retention. vine sufficient provide ME required under tropical conditions.