Clinical‑pathological findings induced by Histophilus somni isolated in subacute cardiac death in feedlot cattle
- de Yaniz, María Guadalupe
- Fiorentino, María Andrea
- García, Jorge
- Viviani, Florencia
- Schofs, Laureano
- Bence, Angel
- Paolicchi, Fernando
- Sánchez Bruni, Sergio
DOIAbstract
The purpose of this report is to provide information about the different presentations of cardiac and extra-cardiac histophilosis and, to assess the antimicrobial (ATM) susceptibility of Histophilus somni isolated from these cardiac lesions to different ATM agents commonly used for treating bovine bacterial respiratory pathogens. Eight feedlot calves, which died after suffering from food rejection, apathy, hyperthermia, cough and nasal mucous discharge, and lack of response to ATM therapy, were studied. Cardiac lesions observed at necropsy included valvular/mural endocarditis, myocardial infarction, and necrotizing myocarditis, miliar non-suppurative myocarditis, myocardic necrotic sequestrum, and/or pericarditis. Histopathological, bacteri...
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