The growing rabbits at Agriculture College Farm, Assiut University suffered for a long time from intestinal disorders and high losses (20%).
Bacteriological examinations of 260 dead animals "6-8 weeks-old" revealed that E.coli was the only isolate, while the parasitological examinations were negative. 44 E.coli isolates were identified to belong to 15" serotypes viz: 028:K67(B12), 0126:K71(816), 055:K59(B5), 0124: K72(817) and 026:K60(B6).
The E.coli strains were experimentally pathogenic to susceptible rabbits. Sensitivity test showed that the isolates were highly sensitive to Neomycin.