Affiliation:
1. FSBEI HE St. Petersburg State University of Veterinary Medicine
Abstract
Feed additives based on organic acids have a bactericidal and bacteriostatic effect that correlates with the input rate (dosage). The effect of the drugs is due to a cellular metabolic disorder of opportunistic bacteria and a change in the permeability of their cell membranes. The use of acid-based preparations helps to preserve the nutritional value of feed and prevent infection of animals and birds, which is an important aspect in maintaining the productivity of livestock. This article examines the effectiveness of the new feed additive “Vitasil 2 Plus” against micro-organisms of the species Salmonella Enteritidis, Escherichia coli, Pseudomonas aeruginosa by adding to water and various types of raw materials and feed.Epizootic strains isolated from pathological material from birds from poultry farms in the Russian Federation were used as test cultures. The effectiveness of the drug was studied at low and high input rates, depending on the type of substrate being studied. The following substrates were used: drinking water, granulated feed, powder, fish meal and soybean meal. Simple (meat peptone agar), selective (staphylococcal agar) and differential diagnostic (Endo medium, xyloselysine deoxycholate agar - XLD agar) nutrient media were used in the work.According to the results, it was found that the bactericidal and bacteriostatic effects of the feed additive, as a rule, correlate with high and low input rates. As a result, the effectiveness of the complex drug “Vitasil 2 Plus” has been proven against a number of microorganisms, thereby this feed additive can be used in the disinfection of feed and drinking water.
Publisher
Saint-Petersburg State University of Veterinary Medicine
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