Bacterial diarrhoea in newly born calves in Menoufiea governorate [electronic resource].

Includes references.

Out of 200 examined rectal swabs of diarrheic calves, 159 samples 79.5% were positive for bacteriological isolates. The recovered bacterial species were E. coli, s. typhimurum, Campylobacter sp, Corynebacyerium sp, P. aeruginosa and C. perfringens types A and B with incidence of 47.5, 9, 7.5, 6, 4 and 5.5%, respectively. Typing of C. perfringens by intradermal inoculation test in albino Guinea pig revealed that the incidence of toxigenic and non toxigenic strains were (81.9% and 18.1%) respectively. C. perfringens type A was the most predominant to type B with the incidence of 45.5% and 36.4% respectively. The serological serotyping of 95 E. coli isolates revealed the following serotypes K99 (21.1 %), 0157 (17.9%), 0111 (9.5%), 0125 (11.6%), 0119 (15.8%), 026(12.6%), 0128 (8.4%) aud un typed E. coli (3.2%). In vitro sensitivity of the recovered E.coli isolates to different antimicrobial agents shows that, E. coli isolates were highly sensitivite to enrofloxacin, flumequine and tetracycline.

Summary in Arabic.