Com. Ca(H(2)PO(4))(2)center dot H(2)O, CaHPO(4)center dot 2H(2)O and new Ca(4)Na(PO(4))(3) feed components were studied for soluble P (16.06-21.65%) as well as F, Pb, Cd, As and Hg (below 0.19%, 7.55%, 4.45%, 6,60% and 0.095%, resp.) and then added to fodders for pigs and sheeps grown for 42 and 70 days, resp. to cover the demand for P in 30% and 42%, resp. The animal feces, urine, bones and blood were analyzed for P The new Ca(4)Na(PO)(3) additive was the best source of P for the test animals.