Three maize-based diets were formulated to contain 25 % each of cooked, or locally roasted full-fat soya bean, or 20% soya bean meal. The diets were fed to 24 Large White, Landrace, Hampshire and Duroc crossbred pigs from 32.75 kg average weight to 60 2 kg liveweight in a single-way classification bireplicate trial. Average daily feed, average daily gain and feed to gain ratios for the respective diets were 2.19, 2.05 and 2.16 kg; 0.58, 0.60 and 0.61 kg; and 3.88, 3.50 and 3.62. These differences were not statistically significant (P > 0.05). The linear measures and jointed proportions of the carcasses, as well as pig organ weights, were statistically the same for the three test diets. The pigs fed full-fat soya bean however produced soft-fat carcasses. These results suggest that full-fat soya bean, which is appropriately heat-processed, may effectively replace soya bean meal in growing-finishing pig diets.
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