In conclusion, when feeding curcumin to pigs, the source of curcumin and supplier should be considered. The curcumin concentration should be analyzed and determined before feeding it to pigs. Curcumin improved growth performance and immunomodulated the immune response during a LPS challenge. Our studies show that in order to have maximum growth performance and an improved immune response, the level of curcumin is between 46 and 94 mg/kg. Therefore, curcumin has the potential to replace antibiotics in feed; however, more research is needed to determine the appropriate level of curcumin