Over the whole period(28–182d), probiotic supplementation significantly improved growth and F:G. In addition,pigs receiving the standard energy diet exhibited improved F:G compared to pigs receiving the lower energy diet. Probiotic supplementation increased fat and phosphorus (P) appar-ent total tract digestibility (ATTD). Pigs fed the lower energy diets exhibited significantly higher ATTD of DM, CF and P, but lower ATTD of fat than pigs fed the standard energy diets. Probiotic increased CP ATTD under lower but not under the standard level of energy and was effective in improving Ca ATTD in the standard but reduced it on the lower energy diet.