author(s)
C Majhi, GR Jena, L Dash, D Kumar, SK Mishra, A Mishra, MA Elmorsy and MR Das

abstract
This study was conducted in the Department of Veterinary Clinical Medicine, C.V.Sc & A.H, OUAT, Bhubaneswar, Odisha, India, for isolation and identification of Riemerella anatipestifer from duck in Odisha by culturing, staining and biochemical methods. Also, detection of its susceptibility to antibiotics with reference to therapeutic management and preventive vaccination were done. One hundred and twenty-six samples were collected from twenty-two different farms in Odisha. Results showed that eleven out of twenty-two susceptible farms were positive. The in-vitro antibiotic sensitivity of the organism showed high sensitivity to Ciprofloxacin, Norfloxacin, Gentamycin, Chloramphenicol and Polymyxin-B, moderate sensitivity to Doxycycline, and resistance to penicillin-G, Metronidazole, Sulphadiazine, Methicillin, Ampicillin, Cefuroxime and Erythromycin. Chloramphenicol application at therapeutic doses either through feed or water with supportive therapy like immune modulator multivitamin and hepatic stimulants reduced the mortality rate. As a preventive measure, ring vaccination strategy was adopted and gave good results in prevention of further spread of the disease.