ANTIBIOTIC SENSITIVITY PATTERN OFYERSINIA ENTEROCOLITICA ISOLATED FROM MILK AND DAIRY PRODUCTS
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Authors
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T.R. Pugazhenthi
Associate Professor, Dept. of Livestock Products Technology, Instructional Livestock Farm Complex Campus, Veterinary College and Research Institute, Tirunelveli-627 358.
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A. Elango
Professor and Head, Department of Dairy Science, Veterinary College and Research Institute, Namakkal – 1
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C. Naresh Kumar
Professor and Head, Department of Dairy Science, Madras Veterinary College, Chennai – 600 007
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B. Dhanalakshmi
Professor, Department of Dairy Science, Madras Veterinary College, Chennai – 600 007
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A. Bharathidhasan
Assistant Professor, Department of Animal Nutrition, Madras Veterinary College, Chennai – 600 007
Keywords:
Milk, Yersinia enterocolitica, antibiotic resistanceAbstract
From a total of 2431 samples of milk and milk products analyzed at Chennai, twenty isolates of bacteria were identified as Yersinia species by the conventional biochemical method which includes nine Yersinia enterocolitica (0.37%), six Y. frederiksenii (0.25%) and five Y. kristensenii (0.21%). The sensitivity pattern of six antimicrobial agents viz. ampicillin, chloramphenicol, ciprofloxacin, gentamicin, penicillin and tetracycline were tested against nine isolates of Y. enterocolitica. The invitro antibiotic sensitivity testing showed that ciprofloxacin (5 mcg) and tetracycline (30 mcg) were the most effective antibiotics against Y. enterocolitica, whereas, penicillin (10 units) was the most ineffective one. Hence, analyzing the prevalence and antibiotic sensitivity pattern of Y. enterocolitica isolates from dairy products is essential.
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References
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