SIGNIFICANCE OF STAPHYLOCOCCUS AUREUS IN RABBITS IN ASSIUT GOVERNORATE دلالات وجود الميکروب المکور العنقودي الذهبي فى الأرانب بمحافظة أسيوط

Document Type : Original Article

Abstract

ABSTRACT :




A total of 67 rabbits (18 apparently healthy and 49 freshly dead rabbits were collected from different private rabbitaries at Assiut Governorate. All cases were subjected to post-mortem and bacteriological examinations for possible recovery of Staphylococcus aureus microorganisms. Only 15 positive cases of Staph. aureus were isolated with an incidence of 22.38% (out of 18 apparently normal rabbit, 2 (11.11%) rabbits were affected with Staph. aureus while, from 49 freshly dead rabbits 13 (26.53%) were positive for Staph. aureus. Experimental infection in 6-8 week-old rabbits via the subcutaneous (S/C) injection of isolated Staph. aureus led to 80% mortality with post-mortem lesions similar to a great extent to those of natural infection. Reisolation of inoculated bacteria was also done. The in vitro sensitivity testing of the isolated Staph. aureus against different antimicrobial agents showed that the examined isolates were highly sensitivite to ciprofloxacin, enerofloxacin, amikacin and gentamycin.
لدراسة مدى تعرض مزارع الأرانب الخاصة بمحافظة أسيوط للإصابة بالميکروب المکورالعنقودى الذهبي0 أجريت  الفحوص البکتريولوجية لعدد 67 أرنب منها 18 أرنب سليم ظاهريا و49 أرنب حديثة النفوق يشتبه فى إصابتها بالميکروب المکور العنقودي الذهبي0 أوضحت الفحوص البکتريولوجية عزل 15 حالة إيجابية لميکروب العنقودي الذهبي بنسبة 22.38%، وکانت نسبة العزل فى الأرانب السليمة ظاهريا 11.110% بينما کانت هذه النسبة مرتفعه فى الحالات النافقة 26.53%0 وبأجراء العدوى الصناعية بالميکروب المعزول فى الأرانب عند عمر 6-8 أسابيع بواسطة الحقن تحت الجلد أتضح شدة ضراوتها للأرانب حيث وصلت نسبة النفوق إلي 80%   وقد کانت الآفات التشريحية تشبه إلي حد کبير تلک التي سجلت فى العدوى الطبيعية0 هذا وقد تم عزل الميکروب مرة أخرى من الأرانب النافقة. وبإجراء اختبار الحساسية لهذا الميکروب باستخدام أنواع مختلفة من المضادات الميکروبية وجد أنها جميعا عالية الحساسية لکل من السيبروفلوکساسين والأنروفلوکساسين و الأميکاسين والجنتاميسين.

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