Experimental contagious caprine pleuropneumonia : a long term study on the course of infection and pathology in a flock of goats infected with Mycoplasma capricolum subsp. capripneumoniae

Wesonga H.O., Bölske Göran, Thiaucourt François, Wanjohi C., Lindberg R.. 2004. Experimental contagious caprine pleuropneumonia : a long term study on the course of infection and pathology in a flock of goats infected with Mycoplasma capricolum subsp. capripneumoniae. Acta Veterinaria Scandinavica, 45 : 167-179.

https://doi.org/10.1186/1751-0147-45-167

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Résumé : Contagious caprine pleuropneumonia (CCPP) is a major threat to goat farming in parts of Africa and Asia. It classically causes acute high morbidity and mortality early in infection, but little is known of its long term epizootiology and course. In this study, 10 goats were inoculated with Mycoplasma capricolum subsp. capripneumoniae (M. capripneumoniae) and then mixed with 15 goats for contact transmission. The disease course was monitored in each goat for 56-105 days, whereafter the goats were killed and necropsied. Varying features signifying infection occurred in altogether 17 goats (7 inoculated, 10 in-contact). Clinical signs were severe in 8 goats but no fatalities occurred. Only 6 goats had serum antibody titres against M. capripneumoniae in ELISA. Fourteen goats (5 inoculated, 9 in-contact) had chronic pleuropulmonary lesions compatible with CCPP at necropsy and 7 of those showed M. capripneumoniae antigen in the lung by immunohistochemistry. Neither cultivation nor PCR tests were positive for the agent in any goat. The results indicate that the clinical course of CCPP in a flock maybe comparatively mild, M. capripneumoniaeassociated lung lesions may be present at a late stage of infection, and chronic infection may occur without a significant serological response.

Mots-clés Agrovoc : péripneumonie contagieuse bovine, Mycoplasma, Test ELISA, immunologie, pathologie

Mots-clés complémentaires : Mycoplasma capripneumoniae

Classification Agris : L73 - Maladies des animaux

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