Histopathologic lesions in conventional pigs experimentally infected with Haemophilus parasuis serovar 5

Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
A PalzerM Ritzmann

Abstract

In the present study various tissues of pigs were investigated for the presence of histopathologic lesions after an experimental infection with Haemophilus (H.) parasuis serovar 5. Conventional pigs (n = 36) were divided into a control group B (n = 9) and a challenge group A (n = 27), which was infected intratracheally. Pigs that did not die prior to study termination were euthanized on day 14 post inoculation. Postmortem samples of the lung, heart, liver, kidney, spleen, left tarsal joint capsule and brain were collected. All but one pig with detectable histopathologic lesions (n = 11) showed typical macroscopic changes. Histopathologic examination of all tissue samples identified pyelitis (n = 10), synovitis (n = 7) and meningitis (n = 7) and all those animals were euthanized prior to study termination. No histopathologic lesions were found in pigs of the control group. The correlations between pyelitis and meningitis, pyelitis and synovitis and synovitis and meningitis were significant (p < 0.001). No significant correlation could be observed between the histopathologic and the clinical examination of the joints. The investigation of samples from the joints by PCR was not significantly correlated with the observed synovitis....Continue Reading

References

Jun 1, 1983·Australian Veterinary Journal·R L PeetD Moir
Oct 1, 1995·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·J L VahleJ J Andrews
Mar 17, 2004·Veterinary Microbiology·Simone Oliveira, Carlos Pijoan
Nov 23, 2006·Veterinary Microbiology·Oystein AngenThomas D Leser

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