The study was conducted in Maiduguri, North - Eastern Nigeria to assess the bacterial flora, gross and
histopathological lesions of caprine pneumonic lungs. A total of 500 caprine pneumonic lung samples
from goats slaughtered at the Maiduguri municipal abattoir were collected and examined. The results of
the bacterial isolates show Escherichia coli (86.6%), Mannheinmia haemolytica (54.4%), Klebsiella
pneumoniae (52.8%), Streptococcus pyogenes (19.6%) and Staphylococcus aureus (17.6%). Mixed
infection of S. aureus and S. pyogenes was seen in 41(8.2%), E. coli and S. aureus in 36 (7.2%) and K.
pneumoniae, S. aureus and S. pyogenes in 29 (5.8%). The gross lesions of pneumonic lungs identified
were congestion, consolidation and exudation. Three types of pneumonia were identified based on the
histopatholological examinations of 25 pneumonic lungs randomly selected from the 500 lungs samples
collected which included: bronchopneumonia 12 (48%), interstitial pneumonia 8 (32%) and Cuffing
pneumonia 5 (20%). E. coli and M. haemolytica were the bacteria most frequently isolated from lungs
with lesions of bronchopneumonia while S. pyogenes and S. aureus were more frequently isolated from
lungs with lesions of interstitial pneumonia. There was no statistical association (P>0.05) between the
lung lesions observed and the associated bacterial isolates.