Effects of soluble or IF without or with carbohydrases on the fecal score of pigs challenged with ETEC. (A) Prechallenge log (odds ratio) of fecal score, (B) postchallenge log (odds ratio) of fecal score. NC = nonchallenge control; PC = positive challenge control; SF− = soluble fiber diet included 10% sugar beet pulp without carbohydrases; SF+ = soluble fiber diet included 10% sugar beet pulp with carbohydrases; IF− = insoluble fiber diet 15% distiller’s dried grains with solubles without carbohydrases; IF+ = insoluble fiber diet 15% distiller’s dried grains with solubles with carbohydrases. The carbohydrases contained 0.01% pectinase (Pectinase ABE; 56 PE per kg of diet), 0.01% xylanase (Econase XT; 19,000 BXU per kg of diet), and 0.001% β-glucanase (Econase GT P; 23,200 BU per kg of diet) according to the manufacturer’s recommendations (AB Vista, Plantation, FL). P (IF vs. SF) < 0.001, P (enzyme) = 0.013, P (fiber × enzyme) > 0.10; *significant difference between NC vs. PC and IF− vs. PC (P < 0.05).