TY JOUR TI EVALUATION OF THE QUALITY OF BULLS-PRODUCERS’ OFFSPRING ACCORDING TO THE QUALITY AND TESTING THEIR SONS ACCORDING TO THEIR OWN PRODUCTIVITY KW Hereford breed KW average daily gain KW line KW live weight KW selection JO Bulletin of KSAU AU Vil, L.G. AU Andrianovsky, V.A. PY 2018 IS PB Krasnoyarsk State Agrarian University