Preparation and application of a functional biological additive for quails based on microbial conversion of plant raw materials

Abstract

When developing functional feed additives it is of interest to use microorganisms that have the ability to take root in the gastrointestinal tract of poultry and normalize its microflora to have a positive effect on the immune system. One of these bacteria is Propionibacterium shermanii, which has a fortifying, immunostimulating, antimutagenic effect, and can reduce the toxic effect of ultraviolet light and chemical compounds. Azotobacter vinelandii, which has probiotic fortifying, antibiotic properties, is effective as a stimulator of the development of the entire microbiota in a contaminated object, and recycles the formed ammonia in bird droppings, was chosen as another microorganism for creating the additive. The purpose of the research was to develop a functional biological additive based on probiotic microflora, using the by-products of crop processing in the formulations, and to select the norms for its introduction into the diet of quails. As a result of the research the technology of joint cultivation of Propionibacterium shermanii and Azotobacter vinelandii strains was developed, a universal starter culture was created that allows to ferment by-products of processing of plant raw materials, a functional additive with immunostimulating, vitamin and provitamin properties for quails has been obtained. The results of the production test confirmed the effectiveness of the developed additive in the diet of quails. Economic efficiency in the application of the proposed functional biological additive has been shown a reduction in feed consumption per 1 kg of live weight gain by 5,13 %. In addition, the economic effect of using the functional biological additive increases. Thus, the profit in the experimental group was 2738,34 rubles, which was 12,45 % higher than in the control group.