Abstract

The present study was an attempt to isolate and identify the diverse bacteria localizing pneumonic lungs and the associated tracheas of 50 slaughtered cattle at Addis Ababa Abattoirs enterprise, central Ethiopia, in both aerobic and anaerobic environments. 158 and 135 bacterial isolate was found in aerobic and anaerobic state, respectively using primary and secondary microbiological testes. Gram positive bacteria were the dominant bacteria in both conditions. The frequency of isolation increased from trachea down to the lung in both state indicating the bacterial role in the progress of bovine pneumonia. Most prevalently isolated bacteria from both aerobics and anaerobics conditions were Staphylococcus species, Bacillus species, Mannheimia haemolytica and Pasteurella multocida. Whereas the Streptococcus species, E.coli, Klebsiella pneumoniae, Actinobacillus species, Micrococcus species, Arcanobacterium, species Neisseriaspecies, Acinetobacter species, Corynebacterium species, Bordetella species, Pseudomonas species, and Rhodococcus equi were among the bacteria isolated.