TY CONF TI USE OF ENERGOPROTEIN CONCENTRATES BASED ON LUPINE IN FEEDING DAIRY COWS IN THE CONDITIONS OF THE KALININGRAD REGION KW energy protein concentrate KW diet KW lupine KW flax KW triticale KW dairy cows KW productivity KW efficiency JO Multifunctional adaptive fodder production AU Fedorova, Z.N. AU Tkachenko, Y.G. AU Bliadze, V.G. PY 2025 PB Federal Williams Research Center of Forage Production and Agroecology