TY CONF TI FEATURES OF THE USE OF NITROGEN DIETS IN COWS WITH DIFFERENT LEVELS AND QUALITY OF PROTEIN. KW protein level KW protein solubility and cleavability KW milk productivity KW live weight gain KW nitrogen balance JO Multifunctional adaptive fodder production 31 (79) AU Mokrushina, O.G. PY 2023 PB Federal Williams Research Center of Forage Production and Agroecology