Cassava starch refuse as substitute for maize or sorghum in sheep and goat rations
1978
Otchere, E.O., Department of Animal Science, University of Ghana, Legon, Ghana | Odoi, F.N.A., Department of Animal Science, University of Ghana, Legon, Ghana | Ayebo, D.A., Department of Animal Science, University of Ghana, Legon, Ghana
The feeding value of cassava (Manihot utilissima Grantz) starch refuse (CSR), a by-product of starch extraction from the cassava root, was determined in digestibility trials for possible inclusion in sheep and goat diets as a substitute for maize (Zea mays) or sorghum (Sorghum vuLgare). Three each of castrated West African Dwarf goats and sheep were used concurrently in a double 3x3 Latin Square to determine coefficients of digestibility of proximate components in three diets based on CSR, maize and sorghum. Analyses showed CSR to be high in ash and low in crude protein and ether extract. It was observed that sheep consumed significantly more feed dry matter than goats in each of the three diets (P 0.05). Dry matter intake within species and between diets were not significantly different. Proximate components in the three diets were digested to about the same extent except that ether extract in the CSR-based diet was digested to a significantly lesser (P 0.0 I) extent than the other two diets. Digestibility coefficients for goats were generally a few percentage units higher than sheep, and consequently, goats derived slightly more total digestible nutrients (TON) from the different diets than sheep. Differences were, however, non-significant. The TON of the CSR-based diet was about 90 per cent of the maize- and sorghum-based diets.
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