Environment, Max- Emanuel-Straße 17, 1180 Vienna, Austria. Based on their proximate composition, 6 feedstuffs with highest CP and low NfE, from animal sources, were identified as potential dietary protein source, 16 feedstuffs with high CP and high NfE were identified as dietary protein and energy source and 11 feedstuffs with low CP and highest NfE were identified as dietary energy source. Samples were sundried and ground into finer particles using an electric grinder and metabo uk 333 manual through a 1 mm sieve.
Analyses were conducted at the National Fisheries and Other Aquatic Life Research Center of the Ethiopian Institute of Agricultural Research in Sebeta, Ethiopia. The proximate composition of feedstuffs of animal origin is presented in Table 2. The proximate composition of selected oilseed cakes is presented in Table 3. Among these feedstuffs, Nougseed cake had the lowest CP content, while soybean seed cake had the highest. The proximate composition of by-products from brewery and the production of wine and local beverage is presented in Table 4.
Grape pulp had the lowest, while dried brewery yeast from Harrar brewery had the highest. The proximate composition of feedstuffs from different seed brans and hulls is presented in Table 5. Among this group of feedstuffs, chick pea hulls had the lowest CP, while lentil hulls had the highest. EE and ash levels in this group were found to be low. However, seed brans and hulls were generally rich in NfE. The proximate composition of feedstuffs from fruit peels and seeds is presented in Table 6.