show Abstracthide AbstractA total of 24 healthy weaned at 21 days piglets from a commercial farm, they were randomly divided into four groups with six replicates per group and one piglet per replicate. The control group (CON group) and the challenge group (ETEC group) were fed a basal diet, while the challenge + zinc oxide group (ETEC+ZnO group) and the challenge + phage group (ETEC+Phage group) were fed diets supplemented with 1600 mg/kg zinc oxide and 1000 mg/kg phage,