Incidence of Chronic Respiratory Disease in Emu birds was recorded in Krishna District, Andhra Pradesh. Among the 258 Emu birds that were examined, 41 birds were found to be affected by CRD. Clinical signs in CRD affected birds were dyspnoea, moist rales, exudation from the nostrils, swollen face and infraorbital sinuses. Gross lesions recorded were catarrhal exudate in the nares and trachea, mild to severe congestion of tracheal mucosa, fibrinous exudation in the pleura and lungs, moderate to severe air sacculitis of all the air sacs characterized by moderate cloudiness of air sacs to caseous exudation that was attached to the walls of the airsacs. Serum plate agglutination test detected antibodies against M. gallisepticum in 68% of the ailing birds. Treatment of the ailing birds with Tylosin and Tiamulin was found to be effective.
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