TY JOUR TI MORPHOLOGY AND VARIETAL COMPOSITION OF BULLS CALVES WHEN FED WITH HAYLAGE WITH BIOLOGICAL PRESERVATIVES KW silage KW biological preservatives KW laksil KW silostan KW bull calves KW meat production KW morphological composition KW varietal composition KW beef JO Agrarian Bulletin of the AU , .. AU , .. AU , .. PY 2018 IS 174 PB Ural State Agrarian University