True ileal phosphorus digestibility in meat and bone meal for broiler chickens was determined using the direct method.
Basal ileal endogenous phosphorus losses were determined to be 354 mg/kg dry matter intake.
True ileal P digestibility coefficients of the four meat and bone meal samples ranged from 0.44 and 0.62.
Further studies are needed to confirm whether the direct method can be used for the determination of ileal phosphorus digestibility of other common feed ingredients.