Use of the Probiotic Actisaf SC 47 in Feeding of Lactating Cows

The present research investigates effectiveness of the Actisaf SC 47 probiotic based on live Saccharomyces cerevisiae yeast in feeding high-yielding Holstein cows. The aim of the study is to provide a comprehensive assessment of the supplement effect on productivity, milk quality parameters, blood biochemical profile, animal behavior and economic efficiency. A 90-day farming experiment has been carried out with two groups of 20 cows each: a control group and an experimental one. The experimental cows have been given the basal diet supplemented with Actisaf SC 47 at a dosage of 10 g/head/day. The results of the experiment have shown a statistically significant increase (p<0.05) in average daily milk yield in the experimental group by 8.4% compared to the control one. The amount of the main milk components (fat, protein, lactose, and solids-not-fat) has increased by 3–7%, while remaining within physiological limits. Blood biochemical analysis has revealed high levels of total protein, glucose, calcium, and phosphorus, indicating improved metabolic processes and enhanced metabolic stability. Behaviour observations have confirmed extended rumination duration and increased dry matter intake, which may indicate improved rumen microbial activity. The economic analysis has demonstrated a revenue increase of 167,000 rubles and a profit gain of 131,000 rubles, attributed to increased milk production, with additional costs for the probiotic amounting to 36,000 rubles. Profitability in the experimental group has reached 129.1%, compared to 119.9% in the control one. Thus, the Actisaf SC 47 probiotic is an effective tool for improving productivity as well as economic return in industrial dairy farming that comprises biological safety, technological stability and economic feasibility.