Studies on Corynebacterium pseudotuberculosis, Staphylococcus aureus and Staphylococcus aureus subsp. anaerobius isolatedfrom sheep skin abscesses in Beni Suef [electronic resource]

Includes references.

Clinical examination of 380 rearing sheep revealed that 30 animai were suffering from skin abscesses with an incidence of (7.89%). Bacteriological examination of 30 swabs from affected sheep revealed isolation of 30 isolates of C pseudotuberculosis (48.39%) , 18 isolates of S. aureus (29.03%) and 14 isolates of S. aureus subsp. anaerobius (22.S8).The isolated bacteria were identified morphologically and biochemically.Tbe results of animal patbogenicity test sbowed tbat C pseudotuberculosis isolates were 100% pathogenic to guinea pigs and 80% of S.Qurells isolates were pathogenic to mice, while all isolates of S. Qureus subsp. anaerobius were pathogenic to mice. The dead animals showed haemorrhage and ·sY,rnptoms of septicaemia, C pseudotuberculosis, S.aureus and S. aureus subsp. anaerobius were reisolated from the dead animals. Antimicrobial sensitivity of C pseudotuberculosis, S. aureus aDd S. allreus subsp. anaerobius isolates to some antimicrobial agents wbicb usually nsed in farms sbowed Ibat from 90% to 100% of C. pseudotuberculosis isolates were sensitive to erythromytin, amoxicillin, tetracycline ,streptomycin, ampicillin and ri~ampicin while S. aureus isolates (from 55%. to 66%) were sensitive to rifampicin,tetracycline ,erythromycin and streptomycin, while S. aureus subsp. anaerobius isolates were moderately resistant to all used antimicrobial agents.

Summary in Arabic.

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