Studying the microflora of broilers to assess the effectiveness of using new feed additives

Abstract

The creation of new feed additives, compositions of original substances (vegetable or chemical origin) requires a modern assessment of their safety for the animal body and effective use in the production of agricultural products. In the experiment, the control group received a basic diet (BD); I experimental - BD with lived microorganisms based on bacterial strain Bacillus cereus in a dose of 4 ml/kg b.w./day; II experimental - BD + Bacillus cereus + vegetable substance (9 μg/kg b.w.//day); III experimental - BD + vegetable substance (9 μg/kg per day). The Bacillus cereus strain was found to reduce the number of antimicrobial agents resistant forms of bacteria, whereas the use of vegetable substance did not significantly change the overall picture. At the same time, it should be noted that there is a need for further studies to evaluate active substances of medicinal plant extracts and their synergistic effect, to create promising feed substances.