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Colistin resistance of non-pathogenic strains of Escherichia coli occurring as natural intestinal flora in broiler chickens treated and not treated with colistin sulphate Cover

Colistin resistance of non-pathogenic strains of Escherichia coli occurring as natural intestinal flora in broiler chickens treated and not treated with colistin sulphate

Journal of Veterinary Research
Volume 64 (2020): Issue 3 (September 2020)
By: ,  ,  ,  ,  ,  ,   and    
Open Access
|Sep 2020
Figures & tables

Figures & Tables

Table 1

Number of E. coli strains resistant to more than two antibiotics

Number of antibiotics:Percentage of resistant bacteria (number of strains out of the total 25):
312% (3)
416% (4)
520% (5)
628% (7)
78% (2)
812% (3)
94% (1)
Fig. 1

Electrophoresis for mcr-1 gene amplification of E. coli isolates with MIC exceeding 2 μg/mL. R1–4 – mcr-1-positive E. coli; PK – positive control; S1–4 – negative controls; 0 – sample without DNA

Table 2

Number of isolated colistin-resistant E. coli in the flocks treated with colistin sulphate and those not treated

Number of flocks (n)Percentage of flocksNumber of flocks carryingmcr-1 gene (n)Percentage of flocks carrying mcr-1 gene
Not treated (a)7144.94%811.27%
Treated (b)8755.06%1719.54%
Total158100.00%2515.82%

a flocks not treated with colistin sulphate

b flocks treated with colistin sulphate

DOI: https://doi.org/10.2478/jvetres-2020-0060 | Journal eISSN: 2450-8608 (formerly 2300-3235)
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Language: English
Page range: 399 - 405
Submitted on: Feb 23, 2020
Accepted on: Aug 27, 2020
Published on: Sep 16, 2020
Published by: National Veterinary Research Institute in Pulawy
In partnership with: Paradigm Publishing Services
Keywords:
poultry,
Escherichia coli,
antibiotic resistance,
colistin
Related subjects:
Life sciences,
Molecular biology,
Microbiology and virology,
Life sciences, other,
Medicine,
Veterinary medicine

© 2020 Michał Majewski, Anna Łukomska, Jarosław Wilczyński, Danuta Wystalska, Przemysław Racewicz, Joanna Nowacka-Woszuk, Marcin Pszczola, Krzysztof Anusz, published by National Veterinary Research Institute in Pulawy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Volume 64 (2020): Issue 3 (September 2020)
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