The fodder value of green mass of mixtures of birdsfoot trefoil and cereal perennial grasses, depending on the mode of useThe fodder value of green mass of mixtures of birdsfoot trefoil and cereal perennial grasses, depending on the mode of use

The development of animal husbandry requires the annual production of a sufficient amount of high-quality feed, their nutritional balance, which cannot be achieved without perennial legumes and legume-cereal mixtures. The content of nutrients in the dry matter of forage depends on both the composition of the grass mixture and the mode of use of the grass stand. Therefore, the main reference point for modern feed production should be an innovative development model that will ensure the production of feed with specified quality parameters. Goal and tasks. Determine the effect of the composition of grass mixtures and the mode of use on the fodder value of the grass stand, in particular, the content in dry matter of fodder units, crude protein, gross and metabolic energy. Research methods. System analysis, field, laboratory, comparative calculation. Results. Perennial legumes and legume-grass mixtures are the main source of protein for livestock. According to the results of three-year studies, it was found that regardless of the composition of grass mixtures in the tri-grass regime of grass use, the content of crude protein in the dry weight of feed was much higher compared to the two-grass regime of grass use. And a high content of crude protein was in the dry mass of the forage from the grass mixture of birdsfoot trefoil with tail grass. So, with a three-time alienation of the yield of the leafy mass of the grass mixture, the birdsfoot trefoil with tail grass, had a high content of crude protein: 13.93 – in the first, 15.83 – in the second and 15.09% – in the third slopes. Replacement of the two-oxide mode of use with trioxide increased the content of exchange energy from the first cut of the grass mixture with birdsfoot trefoil with tail grass by 0.19 MJ/kg of dry matter, and of the grass mixture of birdsfoot trefoil with bromus inermis – by 0.18 MJ/kg of dry matter. Conclusions. Thus, in the triangular mode of use of larch-grass stands, the nutritional value of the feed was higher compared to the two mowings. Thus, with three-time alienation of the crop of leaf mass, the content of feed units was 0.76-0.82, metabolic energy – 8.77-9.15 MJ/kg, while with double mowing – respectively 0.75-0.80 and 8,75-9.03 MJ/kg of dry matter