Twenty-eight weaning pigs were used in a feeding experiment to determine the effect of different levels of lactose in the diet on growth performance and carcass characteristics. Seven pigs weighing initially 50 lb and penned individually were allocated to each of four treatment diets in which lactose was substituted for wheat starch at levels of 0, 15, 30, or 45 of the diet. The meal mixtures were fed as a gruel using three parts water : one part meal (w/w).
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