author(s)
Keneisezo Kuotsu, Kevisenuo Evalyn Vizo and Neithono Kuotsu

abstract
Avian Pastuerellosis caused by Pasteurella spp has found to cause economic significance in Broiler Breeder farms in intensive poultry producing areas and persists as an infection in specific integrations or farms. Acute outbreak associated with the environment or managemental stress, may result in depression in egg production. In this study, Broiler breeder birds were bought to the laboratory with a history of mortality characterized by respiratory distress. On post mortem, air sacculitis, pericarditis along with fibrinous perihepatitis and necrotic foci like lesions were observed in the liver. The liver samples were collected for the culture of Pasteurella organisms and Biochemical tests were conducted to identify the species of Pasteurella. Bacteriological evaluation was done by culturing the samples directly into Nutrient agar, Mac Conkey agar and Blood agar. The pure colonies were isolated and stained using Gram’s staining technique and based on morphology and biochemical tests, the causal organism were found to be Mannheimia Haemolytica