TY JOUR TI PRODUCTIVITY AND NUTRITIVE VALUE OF FORAGE CROPS UNDER CONDITIONS OF SIBERIA KW forage crops KW amaranth KW maize KW yield KW green mass KW dry matter KW nutrients KW sugar KW fat KW feed units KW exchange energy JO Bulletin of KSAU AU Ivchenko, V.K. AU Romanov, V.N. AU Litau, V.M. AU Khmelnitsky, S.A. PY 2016 IS PB Krasnoyarsk State Agrarian University