Table 4.

Phenotypic antimicrobial sensitivity pattern of 30 Staphylococcus aureus isolates from subclinical mastitic dairy cows.

Antibiotics	Concentration (μg)	No. isolates	No. resistant isolates (%)
Tetracycline	30.00	30	30/30 (100%),
Erythromycin	15.00	30	17/30 (56.66%),
Clindamycin	2.00	30	5/30 (16.66%).
Amikacin	30.00	30	0 (0.00%)
Ampicillin	10.00	30	0 (0.00%)
Amoxicillin plus clavulanic acid	20.00 + 10.00	30	0 (0.00%)
Ampicillin plus sulbactam	10.00 + 10.00	30	0 (0.00%)
Ciprofloxacin	5.00	30	0 (0.00%)
Colistin	10.00	30	0 (0.00%)
Gentamicin	10.00	30	0 (0.00%)
Imipenem	10.00	30	0 (0.00%)
Tobramycin	30.00	30	0 (0.00%)
Doxycycline	30.00	30	0 (0.00%)
Vancomycin	30.00	30	0 (0.00%)