Feed additive to increase dairy productivity of cows
Using of feed additives for increasing the productivity of dairy cattle is relevantin agriculture. Duringof the researchthe producer strain Saccharomus cerevisiae, thecomponents of the nutrient medium, the optimal concentration of potassium humatefor obtaining yeast biomass, the parameters of deep yeast cultivation in the presenceof domestic potassium humate with a humic content of up to 56% by dry matterwereselected. For obtainingthe feed additive, a technological scheme has been worked out:yeast cultivation for 48 hours with deep cultivation at rest; 24 hours when grown in afermenter with aeration of 120-150 rpm, at 28°C with a pH of 5.0±0.5. Analysis ofthe effectiveness of the feed additive on laboratory animals (mice) showed superiorityin live weight by 2.8 g of the experimental group.In the experience on the livestock ofdairy cows, it allowed to increase milk productivity. 2 groups of animals wereformed, 100 heads each, control (CG) and experimental (EG), according to the principle of pairs of analogues. The average daily milk yield after a month of taking thefeed additive was more in the EG than in the CG by 4.1 kg, and by the 3rd month by8.74 kg.The output of products (fat and protein) in the EG received more was almost 38% higher than the CG.