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Characteristics of staphylococci isolated from clinical and subclinical mastitis cows in Shahrekord, Iran | ||
| Iranian Journal of Veterinary Research | ||
| مقاله 11، دوره 10، شماره 3 - شماره پیاپی 28، 2009، صفحه 273-277 اصل مقاله (123.23 K) | ||
| نوع مقاله: Full paper (Original article) | ||
| شناسه دیجیتال (DOI): 10.22099/ijvr.2009.1708 | ||
| نویسندگان | ||
| A. Ebrahimi* 1؛ M. Akhavan Taheri2 | ||
| 1Department of Pathobiology, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran | ||
| 2DVM Student, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran | ||
| چکیده | ||
| Staphylococci isolated from 98 mastitic cow’s milk samples were analyzed for the production of alpha,beta and delta-hemolysin on sheep, bovine and horse red blood cells and in vitro susceptibility to several antimicrobial agents. Out of a total of 18 isolated strains, 100% demonstrated hemolytic activity either alone or in combined forms. Among 8 isolates of S. aureus 3 isolates produced α/β and 5 produced α/β/δ hemolysins. From 10 isolates of coagulase-negative staphylococci (CNS), 2 α, 2 δ, 2 α/δ and 4 α/β/δ hemolysins producing isolates were confirmed. S. aureus isolates were resistant to cloxacillin (100%), penicillin (87%) and ampicillin (62.5%). CNSs showed resistance only to amoxicillin (60%). The results suggest that a cow’s infected mammary glands are an important reservoir of hemolytic staphylococci. A high degree of S. aureus antimicrobial resistances was detected. | ||
| کلیدواژهها | ||
| Cow؛ Mastitis؛ Staphylococci؛ Hemolysin؛ Antimicrobial susceptibilities | ||
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