Household-level factors underlying the use of market crop wastes as animal feed in Kampala, Uganda were assessed. Nearly half of the animal farmers in Kampala have at some time used these wastes to feed animals. Banana peels were the most commonly used, followed by cabbage leaves and sweet potato vines. Banana peels and sweet potato vines were chiefly obtained at a fee, while wastes such as bean pods were entirely free. The average distance from the market to the home was 10.3 km. Transportation costs, contamination, lack of knowledge and the wastes not being free were the major challenges faced.
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Katongole et al. (2011) studied this question.