This experiment was carried out to evaluate the effects of 0; 15; 30; and 45% of soybeans seeds additioned to the concentrate on milk production and composition, total dry matter intake (TDM), forage dry matter (FDM), concentrate dry matter (CDM), organic matter (OM), digestible organic matter (DOM), crude protein (CP), ether extract (EE), neutral detergent fiber (NDF), Calcium (Ca), Phosphorus (P) Magnesium (Mg), Sodium (Na), and Potassium (K). Eight lactating cows were used after the peak of lactation, distributed in two 4x4 balanced latin square design. The treatments did not influence TDM, FDM, CDM, OM, DOM, CP, NDF, Ca, P, Mg, Na, and K intakes; whereas the EE intake was increased. It was concluded that treatments did not cause alterations on milk production and composition.