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Abstract
The study was carried out for bacteriological and pathological examination of pneumonic lungs of lambs. The examined lungs were collected from a total number of 70 lambs during the period from January, 2004 to February, 2005.
The gross lesions of the affected lungs were recorded followed by collection of tissue specimens.
Bacteriological findings:
The bacteriological examination revealed that the bacteria isolated as single pathogen were Staphylococcus aureus at rate of 14.2%, followed by Streptococcus pneumoniae at rate of 11.4% and Staphylococcus haemolyticus at rate of 7.1%. Each of Streptococcus pyogenes and Escherichia coli isolated at rate of 2.8%. Also, Staphylococcus epidermidis, Staphylococcus intermedius, Citrobacter diversus and Edwardsiella ictaluri were isolated.
Bacteria isolated as mixed pathogens were Escherichia coli at rate of 15.7%, Staphylococcus aureus at rate of 12.8%, Streptococcus pneumoniae at rate of 11.4%. Each of Streptococcus pyogenes and Staphylococcus intermedius were isolated at rate of 4.2%. After that came Edwardsiella ictaluri at percentage of 4.28%. Each of Staphylococcus haemolyticus and Enterococcus faecalis were isolated at rate of 2.85%. Also, Staphylococcus lentus, Providence alcalifaciens, Pseudomonas aeruginosa, Staphylococcus epidermidis and Klebsiella pneumoniae were isolated as mixed pathogens.