... Ca and P in animal feed, 2.is more applicable to the preparation hens, ducks feed, concentrate feed DCP feed gradeP%≥16.516.5 17 ... ≤301010The purity of DCP, calcium and phosphorus ratio appropriate to ensure a higher degree of its biological effects. Phosphorus content greater ... than 18% of the products, due to a small amount of MCP, and its biological effects better.Drying ...