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Table 4 Antimicrobial susceptibility of staphylococci isolated from bovine clinical mastitis

From: Udder pathogens and their resistance to antimicrobial agents in dairy cows in Estonia

 

S. aureus

CNS

Disc content in μg

n

S*

(%)

I *

(%)

R*

(%)

n

S*

%

I *

(%)

R*

(%)

Ampicillin10 μg

173

40.5

-

59.5

91

61.5

-

38.5

Penicillin10 μg

174

38.6

-

61.4

93

65.5

-

34.4

Cephalothin 30 μg

160

96.2

-

3.8

84

96.4

-

3.6

Clindamycin 2 μg

169

81.9

0

18.1

91

82.4

0

17.6

Erythromycin15 μg

83

95.2

0

4.8

47

85.1

0

14.9

Tetracycline 30 μg

147

95.9

0

4.1

86

88.4

0

11.6

Trimethoprim/sulfa 1.25/23.75 μg

162

96.6

0

3.4

76

97.4

0

2.6

Gentamycin 10 μg

146

93.2

0

6.8

69

98.6

0

1.4

  1. * Propotion of susceptible (S), intermediate susceptibility (I) and resistant (R) isolates