%0 Journal Article %T NATURAL BIOLOGICALLY ACTIVE PREPARATION FOR FEEDING CALVES %A Lashkova, T.B. %A Petrova, G.V. %A Zhukova, M.Y. %K calves, biologically active product, digestibility coefficients, calf blood biochemistry, absolute weight gain in calves, feed conversion ratio for calves %J Bulletin of KSAU %D 2026 %N 0 %P 9 %I Krasnoyarsk State Agrarian University