THE INFLUENCE OF SUGAR CONCENTRATIONS (GLUCOSE, SUCROSE) IN GRAIN AND BEET MOLASSES ON THE GROWTH OF CONDITIONALLY PATHOGENIC BACTERIA

Technologists of livestock complexes face the task of finding a carbohydrate feed supplement that would compensate for the energy deficit in the main diet. Grain and beet molasses meet this requirement. However, being a nutritious substrate, it can be actively colonised by environmental bacteria. The research aims to assess the influence of different concentrations of sugars from grain (glucose) and beet (sucrose) molasses on the development of conditionally pathogenic microorganisms. As a result of studying the effects of sugars from grain (glucose) and beet (sucrose) molasses at concentrations ranging from 18.0 to 46.0%, a preservative (antibacterial) effect against different bacterial species was observed. Glucose at 18.0–30.0% reduced the growth of L. mesenterioides, Ps. aeruginosa, Ps. fluorescens, E. coli, Str. viridans, L. monocytogenes, S. enterica subsp. houtenae, St. aureus, B. cereus by 2 to 5 orders of magnitude compared to the control; for certain species, concentrations of 22.0–30.0%, and for all species, concentrations of 34.0–46.0% were bactericidal. Sucrose at concentrations of 18.0–38.0% reduced the growth of certain species by 1–4 orders of magnitude compared to the control; the preservative (antibacterial) effect was observed at concentrations of 18.0–34.0% for certain species and at concentrations of 38.0–46.0% for all bacteria (except L. mesenterioides). Based on the results obtained, when not using chemical preservatives and disinfectants, it is advisable to manufacture grain molasses shortly before adding it to the animal's diet, as it is more technologically feasible. In this case, facilities for producing feed molasses can be located in the feed preparation department of any livestock complex, reducing the risks of possible contamination and reducing carbohydrate (sugar) content during longdistance transportation and storage.

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