الفهرس 
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Abstract
Ninety one isolates of Klebsiella species were recovered from nasal swabs from diseased sheep and goats with respiratory infection and clinically diseased slaughter animals in an incidence of (20.1%). The results showed isolation of Klebsiella species in diseased sheep and goats with an incidence of (20.6%) and (19.2%) respectively.
The prevalence of isolates were:
1- Klebsiella pneumoniae: 35 isolates from sheep (11.8%) and 18 isolates from goats (11.5%),
2- K. oxytoca: 16 isolates from sheep (5.4%) and 12 isolates from goats (7.6%),
3- K.ozaenae: 6 isolates from sheep (2.02%),
4- K.rhinoscleromatis: 4 isolates from sheep (1.3%).
It was of interest to note that the lung tissues were the organ mostly harboured Klebsiella with percentage (20.29%) this due to the fact that the ratio of the alveolar surface to metabolic weight is very low in small ruminant compared to other species. This implies that respiratory tract is more accessible to injurious agents.
In this work the antimicrobial sensitivity test of Klebsiella species isolated from nasal swabs of diseased animals and from pneumonic lung tissues showing different degree of pneumonia and spleen samples of slaughtered animals proved that all tested strains were sensitive to levofloxacin, imipenem in percentage of (100%)followed by ciprofloxacin and ceftriaxone and higly resistance to ampicillin and amoxacillin.
Concerning to Klebsiella pneumoniae it was noticed that, all strains were highly sensitive to gentamycin (100%). While K.ozaenae and K.rhinoscleromatious were highly resist to tetracycline and tobramycin.