Features of species and biochemical composition of meadow plants under the conditions of the Indigirka river basin

The article describes the main economic types of fields for raising fodder in Momsky District, which is one of the regions of the Far North of Yakutia. Rangelands in this area are wet and overwet sedge-reedy, cotton grass-sedge meadows along the old riverbeds of the above-floodplain terraces. The rangelands of the forest-steppe terrain of the above-floodplain terraces and the slopes of the mountains are represented by steppe vegetation, which differs significantly from the floodplain rangelands. It is the first time that the biochemical research of fodder northern plants has been held under the conditions of the Indigirka river basin. This research complements and improves understanding of the patterns of accumulation of nutrients in meadow plants, in correlation with the extreme conditions of growth. The inundated hay meadows, consisting of foxtail barley and meadow grass-mixed associations, containing more crude protein up to 10.7-11.3% of dry matter than the mixed of foxtail barley and other herbs phytocenosis, which belongs to the dry meadow (9.4%). The field mixed of foxtail barley and herbs, that is used for pasture, contains crude protein up to 11.5% and due to the content of valuable herbs (brome-grass, meadow-grass, foxtail barley) belongs to the first class in quality. It should be noted that the nutritional value of the northern fodder plants is characterized by the first class of quality in terms of energy exchange and the first and second class of the content of feed units. The class of fodder by raw fiber does not meet the standard, as its concentration is high and characterizes the regional peculiarity of the biochemistry of fodder plants in Yakutia.