Dushara I. The nourishing value and productive effect of ensilaging forages from winter barley and vetch in the rations of milch cows

The efficiency of feeding of the dairy cows by vetch-barley silage (comparatively with corn silage) is theoretically grounded and experimentally proved in the dissertation as a part of silage-concentrate-root ration in the conditions of Precarpathians area and its influence on the level of ruminal fermentation, physiologically-biochemical blood parameters, the fragments of nitrogen and phosphorus exchange and processes of milk production are also studied. It is set that use of silage from new barley varieties (Broadleaf) and vetch (Lvivyanka) in the Precarpathians area on the background of silage-concentrate-root type of feeding of lactating cows, it provides their need in accordance with the norm by a number of important parameters of nutrition (protein, calcium, phosphorus, sulfur, copper, zinc, cobalt, iodine is established). It promotes the intensification of metabolic processes in the rumen and blood, improves the digestibility of feed nutrients, increases milk production of cows and the profitability of its production. The feasibility of using in the area of Precarpathians in winter-stalled period of maintenance of dairy cows in the structure of silage-concentrate-root ration from the new barley varietie Broadleaf and the vetch Lvivyanka is proved. In the average the component composition of the nutritional ration should consist of: hay - 8 - 9%, straw - 1,5 - 2, beet feed - 9 - 10, vetch-barley silage - 41 - 46, mixed fodder - 32 - 33, molasses - 2 - 2,5%