Dispersion type feed additive compositions for ruminants, containing



(A) at least one selected from hydrogenated vegetable oil and hydrogenated animal oil each having a melting point of higher than 50° C. and lower than 90° C.,
(B) not less than 0.01 wt % and not more than 6 wt % of a surfactant,
(C) not less than 16 wt % and not more than 72 wt % of a biologically active substance (excluding L-lysine and a salt thereof), and
(D) not less than 1 wt % and not more than 40 wt % of L-lysine or a salt thereof,
contain a biologically active substance at a high concentration, show high protection in the rumen, and are also superior in dissolution in the intestinal tract.