Etiological analysis of oral Mass in a ۳-month-old spotted owlet Chick affected by necrotizing stomatitis

Background: A three-month-old spotted owlet chick (Athene brama), purchased with a history of unsuccessful antibiotic treatment along with worsening symptoms and accompanied by signs of a severe necrotic oral abscess, difficulty in swallowing, respiratory distress, and open-mouth breathing, was referred to the Sana Avian Hospital. Methods: After taking the history and noting the unsuccessful antibiotic treatment received in other clinics, oral swab and cytology, and clinical examination revealed a strong odor of decay, leading to sampling for thorough investigation for the presence of a pathogen. Samples were taken using a sterile swab and cultured onto Blood and MacConkey agar plates, incubated at ۳۷ °C for ۲۴ hours, resulting in the pure growth of Escherichia coli. Antimicrobial susceptibility test, then, was performed using six antibacterial agents, including chloramphenicol, cefepime, ciprofloxacin, norfloxacin, clindamycin, and amikacin. Results: Cytological examination revealed only bacterial involvement, and the possibility of common tumors such as somatic cell carcinoma, papilloma, and fibrosarcoma in the mouth was ruled out. Blood and MacConkey agar plates showed pure colonies of E. coli, and antimicrobial susceptibility test results indicated that the isolates of E. coli were sensitive to ciprofloxacin, norfloxacin, and amikacin. The case was diagnosed as necrotizing stomatitis. Conclusion: After paraclinical examinations, the mass was surgically removed, and the case improved after receiving ciprofloxacin ۱۵-۲۰ mg/kg BW, PO, q۱۲h, for a minimum of ۱۰ days. (extendable to ۱۴ days for granulomatous lesions).

کلیدواژه ها:

Antimicrobial susceptibility test ، Escherichia coli ، Oral mass ، Necrotizing stomatitis ، Spotted owlet chick