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Abstract
In this study 100 chickens showing arthritis were collected from different localities in Sharkia governorates. Positive bacterial isolates (123) were isolated from hock joint and foot pad with their percentage classified as follow, 44 S.aureus (35.77%), 37 E.coli (30.08%),, 5 Salmonella (4.06%), 21 proteus (17.07%), 12 pseudomonas (9.75%), 1 Enterobacter (0.81%) and 3 Shigella (2.43%). .
The prevalence of bacterial isolates from different joints of the examined chickens revealed that the percentage of Staph aureus in hock joint, foot pad was (65.90%) and (34.09%) respectively but in case of E.coli the percentage was (89.18%) and (10.81%) respectively and S. typhimurium percentage was (100%), (0%) while other members of Enterobacteriacea, (Proteus, Pseudomonas, Shigella and Enterobacter) were ranged from (0% to 33.33%)
Serologically E.coli serotypes were O55 (1), O78 (3), O158 (2), O128 (1), O111 (1) and untyped pathogenic strain (3) with a percentage (9.09, 27.2, 18.1, 9.09, 9.09 and 27.2% respectively while salmonella serotypes into S. typhimurium with a percentage 100%.
Staphylococcus aureus was highly sensitive to Enerofloxacin, Ciprofloxacin and, Norofloxacin while E.coli serotypes were highly sensitive to Enerofloxacin, Chlormphenicol ,Colistin sulphate and Norofloxacin also S. typhimurium was highly sensitive to Enerofloxacin, Ciprofloxacin ,Sulfa-trimethoprim and Doxycycline.