Profiles of Staphyloccocus aureus isolated from goat persistent mastitis before and after treatment with enrofloxacin

Table 1 Values of Minimum Inhibitory Concentration of different antimicrobials in Staphylococcus aureus isolates using the E-test®

Isolates	GEN	TET	VAN	ENR	CIP	OXA	PEN	AMP
Isolates	(R ≥ 16)	(R ≥ 16)	(R ≥ 16)	(R ≥ 8)	(R ≥ 4)	(R ≥ 4)	(R ≥ 0, 25)	(R ≥ 2)*
4^c	3	125	0,25	0,19	3	24	24	3
4^p	6	32	0,145	0,75	3	24	24	16
5^c	12	64	3	0,38	3	24	16	12
5^p	12	16	3	1,25	12¹	32	16	12
6^c	3	16	1,5	0,38	96	32	8	16
6^p	6	24	16¹	0,75	96	42	96	24
7^c	4	36	18	0,125	0,25	24	24	12
7^p	8	32	18	0,19	0,48	24	24	12
8^c	3	96	6	0,25	0,64	12	12	2
8^p	4	96	12	0,25	3	32	32	2
9^c	1	96	32	0,19	3	32	32	4
9^p	0,5	96	32	0,5	3	48	38	4
10^c	12	48	48	0,75	3	48	48	48
10^p	3	48	48	0,75	4¹	96	96	48
100^c	4	48	48	0,5	2	12	12	12
100^p	2	48	96	0,5	12¹	12	12	16
101^c	48	18	3	16	6	96	0,75	16
101^p	48	18	3	16	6	96	0,75	18

Values of MIC in micrograms per milliliter (μg/mL) of different antimicrobials in Staphylococcus aureus isolated from goats with mastitis before (c) and after (p) enrofloxacin treatment using the E-test® (bioMerieux). R resistance. GEN Gentamicin; TET Tetracycline; VAN Vancomycin; ENR Enrofloxacin; CIP Ciprofloxacin; OXA Oxacillin; PEN Penicillin, AMP Ampicillin. Underlined number: resistant for the antimicrobial in test. Bold number: MIC value increased in the isolates obtained in the same animal prior and after enrofloxacin treatment. ¹Sensitivity profile change for resistance in the isolates obtained in the same animal prior and after enrofloxacin treatment. Breakpoint: CLSI [8]. *Breakpoint MacGowan and Wise [9]

ISSN: 1471-2180