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Drug resistance in isolated bacteria from milk of sheep and goats with subclinical mastitis in Shahrekord district | ||
| Iranian Journal of Veterinary Research | ||
| مقاله 11، دوره 8، شماره 1 - شماره پیاپی 18، 2007، صفحه 76-79 اصل مقاله (34.95 K) | ||
| نوع مقاله: Full paper (Original article) | ||
| شناسه دیجیتال (DOI): 10.22099/ijvr.2007.2711 | ||
| نویسندگان | ||
| A. Ebrahimi* 1؛ Sh. Lotfalian2؛ S. Karimi3 | ||
| 1Department of Pathobiology, School of Veterinary Medicine, University of Shahrekord, Shahrekord, Iran | ||
| 2Laboratory of Microbiology, Department of Pathobiology, School of Veterinary Medicine, University of Shahrekord, Shahrekord, Iran | ||
| 3Laboratory of Diagnostic, Department of Clinical Sciences, School of Veterinary Medicine, University of Shahrekord, Shahrekord, Iran | ||
| چکیده | ||
| Four-hundred milk samples from half udders of 20 flocks of native breed goats were aseptically collected. The samples were examined by California mastitis test (CMT). Twenty-one (5.25%) of 400 were CMT-positive. The CMT-positive samples were then cultured and the following bacteria were isolated: Staphylococcus aureus in 3 (14.28%), CNS (coagulase-negative staphylococci) in 14 (66.66%), streptococci in 4 (19.04%) and Mycoplasma spp. in 11 (52.38%) samples. The isolated staphylococci were examined to evaluate their resistance to different antibiotics by disc diffusion method. CNS resistance to amikacin was 78.5%, to penicillin was 50%, to tetracycline 50%, to ampicillin 42.8%, and to doxycycline was 28.5%. Four-hundred native breed sheep milk samples were taken from 19 flocks in the same conditions. The samples were examined by CMT test. 19 (4.75%) of 400 were CMT-positive. The CMT-positive samples were cultured and the following bacteria were isolated: S. aureus in 2 (10.5%), CNS in 7 (36.8%), streptococci in 2 (10.5%), Pasteurella in 1 (5.26%) and Mycoplasma in 9 (47.37%) samples. The isolated staphylococci were examined for antibiotic susceptibility. CNS resistance to amikacin was 42.8%, and to tetracycline, ampicillin, oxycycline and penicillin was 14.3%. Both isolates of S. aureus were resistance to penicillin. | ||
| کلیدواژهها | ||
| Subclinical mastitis؛ Sheep؛ Goat؛ Antibiogram | ||
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