Serogrouping and antibiotic resistance of isolated from broiler chicken with colibacillosis in center of Algeria.

Aim: Colibacillosis is considered as one of the major bacterial infections in avian pathology. The excessive use of antibiotics reduced their effectiveness, which eventually led to the risk of emergence of antibiotic resistance. The aim of this study was to isolate, identify and serotype the pathogenic strains and to determine their antibiotic susceptibility.