
Keywords: ETEC، Esterichia coli Enterotoxigenic; ETEC, enterotoxigenic Escherichia coli; FCS, fecal consistency score; VH, villus height; CD, crypt depth; ADG, average daily gain; ADFI, average daily feed intakeWeanling pig; Zinc oxide; Growth performance; Diarrhea; Villus morphology; Digestive enzyme