TY JOUR TI DYNAMICS OF CHANGES IN THE FEEDING VALUE OF ALFALFA HAYLAGE BY TERMS OF SECTION DAYS OF STORAGE WHEN USING VARIOUS BIOLOGICAL PRESERVATIVES KW alfalfa KW haylage KW biological preservatives KW dry matter KW crude protein KW metabolic energy JO Vestnik of Kazan State Agrarian University AU Fattahova, Z.F. AU Shakirov, S.K. AU Bikchantaev, I.. PY 2019 IS 14 PB Kazan state agrarian University