Prevalence of Escherichia coli Isolated from Oropharynx and Trachea of Clinically Sick Poultry and Antimicrobial Resistance Pattern of the Strains Isolated

Table 1: An overview of samples collected from 100 clinically sick chickens and isolation frequency of E. coli from their oropharyngeal and cloacal swab samples Table 2: Antibiotic resistance profiles of the E. coli isolates tested by Bauer-Kirby method Table 3: Detection of oxytetracycline resistance genes from the resistant isolates Table 4: Unconditional associations between isolation of E. coli from tracheal samples of poultry suffering from different clinical illness and the variables recorded during the collection of samples Table 5: Unconditional associations between isolation of E. coli from oropharyngeal samples of poultry suffering from different clinical illness and the variables recorded during the collection of samples Table 6: Unconditional associations between isolation of Escherichia coli from both tracheal and oropharyngeal samples of poultry suffering from different clinical illness and the variables recorded during the collection of samples Table 7: Multivariable logistic regression (initial model) for assessing the variables independently associated with the isolation of Escherichia coli from oropharyngeal samples of poultry suffering from different clinical illness Table 8: Concentrations and diffusion zone breakpoints for resistance against antibiotics standard for E. coli isolates (CLSI, 2011) Table 9: Primers used to test tetracycline resistance genes Figure 1: Map showing the locations of the areas from where the samples were referred Figure 2: PCR products showing the tetA gene-sized amplicon (502 bp) of a representative number of isolates resistant to oxytetracycline Figure 3: PCR products-band showing of the tetB gene-sized amplicon (930 bp) of a representative number of isolates resistant to oxytetracycline Figure 4: PCR products-band showing of the tetC gene-sized amplicon (888 bp) of two isolates resistant to oxytetracycline