TY JOUR TI BULLS CONSUMPTION AND USE OF DIET SUBSTANCES BY PROBIOTICS VETOSPORIN SUSPENSION KW diet KW probiotics KW suspension KW bull-calves KW fattening KW balanced KW nutritious JO Bulletin Samara State Agricultural Academy AU Vagapov, F.F. AU Gizatova, N.V. PY 2018 IS 3 PB Samara State Agrarian University