Colibacillosis and Antibiotics Resistance Patterns in Broiler

Colibacillosis is considered important in the poultry industry because it generates economic losses due to the disturbance of growth, the decline in production, an increase number of culled chicken, and reduced quality of carcasses and eggs. Study of colibacillosis and antibiotics resistance patterns in broiler was conducted at the Indonesian Research Centre for Veterinary Science. The aim of the study was to provide the latest information on the status of the presence of Escherichia coli in broiler farms in four districts in West Java Province as well as its antibiotics drug resistance patterns and their pathogenicity will be studied. A total of 196 samples of the intestine, liver, heart, egg yolk, air sac that showed gross abnormalities were sampled and feces were collected and used in this study. Escherichia coli was isolated for characterisation and antibiotics drug resistance patterns and their pathogenicity were investigated. Escherichia coli were recovered from 149 (76.02%) samples out of the total samples collected. In this present study, one (7.7%) E. coli isolate was serologically typed into O78 and 12 of them were untypable whereasthe other 7 (4.93%) isolates were serologycally typed into O157 and 135 were untypable. In vitro pathogenicity indicated that 91.55% of the isolates were positive for Congo red binding assay and 4.93% isolates were positive for haemolysine production. Antibiogram profiles indicated that 98.70, 79.30, 75.10, 61.40, and 57.70% isolates were resistance against to amphicillin, neomycin, streptomycin, sulfamethoksazol trimethropim, and kanamycin, respectively. A total of 149 (76,02%) histopathologically had consistent colibacillosis lesion with various degree of severity