TY JOUR TI THE ALGORITHM FOR MODELLING OPTIMUM VARIANTS OF REPAIR OF CATTLE DAIRY BREEDS HERD KW dairy efficiency KW herd repair KW cows selection KW modeling of optimum variants JO Bulletin of KSAU AU Alekseeva, E.A. AU Chetvertakova, E.V. PY 2019 IS 0 PB Krasnoyarsk State Agrarian University