In conclusion, the results from the current study show that wheat-DDGS is an exceptional source of digestible and retainable P for broilers and turkeys; thus the inclusion of wheat-DDGS in the diet will reduce the use of inorganic P sources. Supplemental phytase had no effect on ileal P digestibility or total tract P retention of the wheat-DDGS for broilers and turkeys most likely because the wheat-DDGS contained low levels of phytate-bound P.