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BIOCHEMICAL PROPERTIES OF ALLOCATED FROM FECES CULTURES OF E. COLI AND SENSITIVITY OF ESCHERICHIA TO ANTIBIOTICS

https://doi.org/10.25690/VETPAT.2020.1.71.002

Abstract

The work was performed in two farms Neklinovsky district of the Rostov region. To determine of indole formation the culture was sown in a test tube with Hottinger broth. All samples except # 1371, # 1, # 2, # 131, # 139 showed the presence of a red layer on the surface of the culture fluid, indicating a positive reaction. The next day, the ring appeared, which confirms the presence of indole. To determine the ability to utilize citrate, cultures were sown on the surface of the Simmons medium. Samples # 1371, # 1, # 2, # 131, # 139 showed a change in the green color of the medium to blue, indicating a positive reaction. All the test samples, except # 1371, fermented glucose, sucrose, lactose and mannit, which is typical for Escherichia coli. To determine the formation of hydrogen sulfide culture was sown on three-sugar agar. In sample # 1371, blackening was observed on the medium column, indicating the formation of hydrogen sulfide. In 11 cultures, except for samples # 1, # 2, # 131, # 139, # 1371, hydrogen sulfide was not produced. In the samples # 1, # 2, # 131, # 139 hydrogen sulfide was produced, there were the column and the beveled part of the medium is yellow, the blackening of the medium in the column. Thus, of the 16 samples studied, it was established that the sample # 1371 can be attributed to the bacteria of the species Pseudomonas aeruginosa. In four samples #1, #2, #131, #139 cultures are belong to the bacteria group E. coli + Citrobacter freundii. And in 11 samples cultures are belong to the bacteria group Escherichia coli. In the process of doing the work, examined the feces from calves between 1–8 days of age. The cultures of escherichia were isolated and identified. Sensitivity of escherichia cultures to antibacterial drugs (Meropenem, Imepenem, Pefloxacin, Enrofloxacin, Carbenicillin, Cefotaxime, Ceftriaxone, Vancomycin, Furadonin, Phosphomycin, Gentamicin, Netilmicin, Colistin, Levofloxacin, Tetracycline, Levomycetin, Ciprofloxacin, Chloramphenicol, Norfloxacin, Furagin, Vancomycin, Spectinomycin, Doxycycline, Norfloxacin) were investigated using standard drives. The study showed that in the first farm from 8 samples, escherichia cultures were most sensitive to antibiotics: Fosfomycin, Enrofloxacin, Imepenem, Meropenen, Levofloxacin, Vancomycin, Gentamitacin. In the second farm from 9 samples, escherichia cultures were sensitive to Enrofloxacin, Imepenem, Meropenen, Levofloxacin, Vancomycin, Gentamitacin, Cefotaxime, Norfloxacin.

About the Authors

A. V. Toropyno
(FSBEI) of Higher Professional Education (HPE) «Kuban State Agrarian University named after I. T. Trubilin»
Russian Federation


A. A. Shevchenko
(FSBEI) of Higher Professional Education (HPE) «Kuban State Agrarian University named after I. T. Trubilin»
Russian Federation


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Review

For citations:


Toropyno A.V., Shevchenko A.A. BIOCHEMICAL PROPERTIES OF ALLOCATED FROM FECES CULTURES OF E. COLI AND SENSITIVITY OF ESCHERICHIA TO ANTIBIOTICS. Russian Journal of Veterinary Pathology. 2020;(1):32-40. (In Russ.) https://doi.org/10.25690/VETPAT.2020.1.71.002

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