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Manure N output from growing pigs fed diets based on corn and soybean meal (CSBM) or sorghum and soybean meal (SSBM) supplemented without (SSBM−) or with 150 mg/kg protease (1.5 ± 0.4 units/g of diet; SSBM+) during 70 d period experiment (Exp. 4). Values are least squares means ± SEM; n = 5/treatment. a–cMeans with different superscripts significantly differ (P < 0.05).
