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Table 7 In-Vitro antimicrobial susceptibility of the isolated bacterial pathogens from pneumonic calves

From: Prevalence, the antibiogram and the frequency of virulence genes of the most predominant bacterial pathogens incriminated in calf pneumonia

Antimicrobial agent

Disc conc.(μg)

E. coli (%)

N = 40

S. aureus (%)

N = 20

P. aeruginosa (%)

N = 10

P. multocida (%)

N = 3

R

I

S

R

I

S

R

I

S

R

I

S

Ampicillin

10

20

50

30

100

0

0

100

0

0

100

0

0

Amoxicillin

20

30

30

40

100

0

0

100

0

0

100

0

0

Erythromycin

15

80

20

0

20

0

80

100

0

0

100

0

0

Enrofloxacin

5

0

10

90

0

10

90

0

0

100

0

0

100

Gentamicin

10

90

10

0

20

10

70

0

0

100

0

0

100

Norfloxacin

10

0

10

90

10

10

80

0

0

100

0

0

100

Streptomycin

10

80

10

10

50

40

10

20

20

60

100

0

0

Tetracycline

30

40

20

40

70

10

20

80

20

0

0

33

67

Trimethoprim-Sulphamethoxazol

25

70

10

20

30

20

50

20

40

40

67

0

33

  1. Disc conc. disc concentration, S sensitive, I intermediate, R resistant