TY JOUR TI HEREFORD COWS ADAPTIVE ABILITY TO ZONAL CONDITIONS OF THE AMUR REGION KW imported cattle KW adaptation KW Hereford KW blood test JO Bulletin of KSAU AU Ryabukha, V.A. AU Samusenko, O.L. AU Mansurova, M.S. PY 2015 IS PB Krasnoyarsk State Agrarian University