| Identification and Antimicrobial Susceptibility of Microorganisms Isolated from Bovine Mastitic Milk |
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Hee-Jung Kang1, Ik-Chun Kim1, Jin-Hoe Kim1, Won-Geun Son2, Du-Sik Lee2 |
1Jeju Livestock Promotion Institute
2Department of Veterinary Medicine, Cheju National University |
| 젖소의 유방염 원인균 분리 및 약제 감수성 검사 |
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강희정1, 김익천1, 김진회1, 손원근2, 이두식2 |
1제주도축산진흥원
2제주대학교 수의학과 |
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| Abstract |
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Microorganisms were isolated and identified from bovine 296 quarters which showed positive reaction by California Mastitis Test (CMT) in 40 farms of Jeju from September 1999 to June 2000. The organisms associated with the mastitis of bovine were 11 different bacterial species in this study. Which of them, Staphylococcus aureus was the most predominant species as 152 (51.4%) isolates. Other identified species included 49 (16.5%) coliform, 47 (15.8%) Streptococcus dysgalactiae, 15 (5.1%) Bacillus spp., 8 (2.7%) Staphylococcus epidermidis, 6 (2.1%) Streptococcus agalactiae, 5 (1.7%) Enterococcus faecalis, 5 (1.7%) Corynebacterium spp., 3 (1.0%) Streptococcus uberis, 1 (0.3%) Pseudomonas aeruginosa and 1 (0.3%) Pasteurella haemolytica. Almost of all the islolated beacterial species showed high sensitivity against kanamycin (98.6%), cephalothin (98.0%), streptomycin (94.9%), gentamicin (94.6%), ampicillin (92.2%) and polymyxin B (90.2%). On the contrary, they showed resistance against penicillin (47.0%), tetracycline (37.2%), cefazolin (26.0%), bacitracin (22.6%) and erythromycin (19.9%). Eighty-one isolates were not resistant to any antibiotics and 215 drug resistant isolates showed 89 different drug resistance patterns from single to nine multiple antibiotics resistance patterns. |
| Key Words:
Bovine, Mastitis, Antimicrobial Resistance, Multiple Antibiotics Resistance Patterns |
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