THE USE OF FEED ADDITIVE "ECOSTIMUL-2" IN THE DIET OF LACTATING COWS
Research issue: influence of the feed additive «ECOSTIMUL-2» on the milk yield and general condition of cows during the first phase of lactation. The results of the experiment proved that the feed additive «ECOSTIMUL-2» has a positive effect on milk production of fresh cows during the period of increasing milking capacity. For 100 days of lactation cows from the 2nd and 3rd experimental groups produced 364 and 367 kg more milk than cows from the control group. At the same time, with the inclusion of «ECOSTIMUL-2» in the diet of cows, the loss of live weight during the period of increasing milking capacity is reduced up to 370-380 g a day, against 590 g in the control group. Feed additive «ECOSTIMUL-2» has a positive effect on reproductive qualities of cows. All cows receiving 200-300 mg of the additive were successfully inseminated during 85 days after calving. From the economic efficiency point of view, the optimal dose of feed additive «ECOSTIMUL-2» is 200 mg per head a day. The profitability of milk production at that is 32.7 % (2nd experimental group) which is maximum (control-15.7 %, 1st experimental - 16.0 %, 3rd experimental 29.6 %) with a minimum cost of one kg of products