Bacteriological and serological studies on Mannheimia haemolytica infection in cattle slaughtered at Ahvaz (southwestern Iran) abattoir
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Abstract:
In order to investigate the prevalence of Mannheimia haemolytica infection in cattle, nasal andnasopharyngeal swabs and blood samples were obtained from 250 cattle after slaughter at Ahvaz(southwestern Iran) abattoir. Nasal and nasopharyngeal swabs were cultured on blood agar and incubated at37°C for 24-48 h. The suspected bacterial cultures were processed for isolation of M. haemolytica followingroutine bacteriological techniques. Sera were tested by indirect hemagglutination test (IHA) to revealantibodies against the organism. M. haemolytica was isolated from 1.6% of the sampled cattle. Statisticalanalysis showed that there was no relationship between age and sex with bacterial infection. Serologicalstudies showed that 71.6% of tested sera contained antibody (titer≥1/16) against M. haemolytica. There wasno association between age and sex with serological results.
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Journal title
volume 11 issue 1
pages 84- 87
publication date 2010-03-20
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