Pathomorphological studies of respiratory mannheimiosis in goats
Biswajit Dutta, SA Begum, Rishabh Sarmah, K Sadhasivam, K Kalita, Sophia M Gogoi and P Bora
The study investigated an outbreak of respiratory mannheimiosis in goat maintained at the Goat Research station, AAU, Burnihat during September- October, 2019. Out of the total 215 nos. of animals at risk, 48 nos. were affected and 16 died with a morbidity and cause specific mortality of 22.32% and 33.3% respectively. The clinical signs exhibited by the affected animals were offfed, high rise of temperature (104°-105°F), thick mucoid nasal discharge and coughing. During necropsy, pneumonia was diagnosed among all the cases and the most frequently affected lobe was right cranial lobe. In most of the cases lung showed fibrinous bronchopneumonia. Consolidated areas of the lungs were swollen and dark red in color. In some cases presence of whitish fine foamy fluid or creamy suppuration could also noticed.
Sometimes, the fibrin was adhered in the ribs with or without hydrothorax. The tracheal rings were hemorrhagic and the lumen was filled with the mucus and froth. Microscopically, three different types of pneumonia viz. Fibrinous, suppurative and fibrinopurulant could be seen. Alveolar lumen was filled with fibrinous exudate, erythrocytes, and polymorphonuclear cells. During isolation, the results observed were typical to those exhibited by Mannhemia spp.
Biswajit Dutta, SA Begum, Rishabh Sarmah, K Sadhasivam, K Kalita, Sophia M Gogoi, P Bora. Pathomorphological studies of respiratory mannheimiosis in goats. J Entomol Zool Stud 2020;8(4):1782-1787. DOI: 10.22271/j.ento.2020.v8.i4ab.7392