FIELD: biotechnology, microbiology, veterinary science.
SUBSTANCE: for preparing a preparation cells of microorganism Escherichia coli VKM CR-322D is cultured in nutrient medium containing Hottinger's broth, glucose, yeast extract, manganese sulfate, potassium hydrophosphate, sodium chloride and tap water in the content of amine nitrogen 125-155 mg%. Glucose is added by batch portions in the process of culturing cells that is carried out at temperature 30-31oC at stirring and aeration for 10-12 h. Prepared cultural fluid containing 3 x 109 bacterial cells/ml is mixed with protective sucrose-gelatin medium and subjected for lyophilic drying. Dried mass is stored under nitrogen that enhances safety of viable cells in the preparation. Applying the preparation for prophylaxis and treatment of agricultural and domestic animals and poultries with gastroenteric diseases provides its effectiveness.
EFFECT: improved preparing method, valuable veterinary properties of preparation.
17 cl, 8 ex
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