The results of studies on peculiarities of formation nutritional value and energy intensity of feed from alfalfa-cereal grass mixtures, depending on technological factors of growing, are presented. It has been established that inclusion of alfalfa in cereals significantly improves feed quality, in particular, content of crude protein, protein, nitrogen-free extractives and digestibility of dry weight in vitro. Cereal herbages even with applying nitrogen fertilizers form the lowest content of crude protein - 14.7-15.3 % and are characterized by 2-5 % lower digestibility than alfalfa's and legume-cereal. The best quality of feed for all grass herbages provided applying of N60P60K90 + Fumar, due to which on alfalfa and alfalfa-grass herbages in dry weight 18.4-19.9 % of crude protein was accumulated, and on cereal 15.3 % of raw protein, and providing of fodder unit, respectively, 167-174 g and 143 g. Content of metabolizable energy in dry mass of various types of herbages ranged from 8.6 to 9.5 MJ / kg.
nutritional value, raw protein, energy intensity, alfalfa, cereal components, grass mixtures.