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Table 4 Results of antimicrobial susceptibility testing of the isolated E. coli strains (n = 152)

From: The occurrence of the multidrug resistance (MDR) and the prevalence of virulence genes and QACs resistance genes in E. coli isolated from environmental and avian sources

Antimicrobial disc

No. of E. coli (n = 152)

Resistant

Intermediate

Sensitive

No

%

No

%

No

%

Ampicillin

152

100

0

0

0

0

Amoxicillin/clavulanic acid

123

80.92

29

19.08

0

0

Erythromycin

152

100

0

0

0

0

Gentamicin

76

50

0

0

76

50

Neomycin

0

0

19

12.5

133

87.5

Tetracycline

152

100

0

0

0

0

Doxycycline

38

25

114

75

0

0

Levofloxacin

48

31.58

95

62.5

9

5.92

Norfloxacin

123

80.92

19

12.5

10

6.58

Trimethoprim/sulphamethoxazole

114

75

0

0

38

25

Sulphamethoxazole

123

80.92

0

0

29

19.08

Colistin sulphate

0

0

0

0

152

100

Chi square P value

< 0.0001*

< 0.0001*

< 0.0001*

  1. % calculated according to No of tested E. coli strains