ENTEROBACTERIACEAE AND ITS ROLE IN DIARRHEA OF NEWLY BORN FRIESIAN CALVES IN QUENA GOVERNORATE, EGYPT

Abstract

This study was carried out on 80 faecal samples collected from Friesian calves (1 day to 3 months old) at Quena Governorate. 20 calves were clinically healthy and 60 calves showed sever diarrhoea, with offensive odour and fever. Bacteriological examinations revealed that 64 out of 80 faecal samples (80{%}) were positive to Enterobacteriaceae. Bacterial isolates of the diseased calves were identified biochemically as 37 (61.6{%}) strains of Escherichia coli, 18 (30{%}) strains of Salmonella spp., 3 (5{%}) strains of Pseudomonas spp., 2 (3.3{%}) strains of Shigella spp. and from the clinically healthy calves 2 (10{%}), 1 (5{%}), 1 (5{%}) and 0{%}, respectively. Sensitivity tests for the bacterial isolates revealed that the tested strains were sensitive to ciprofloxacin, lincospectin, gentamicin and streptomycin.