Mycoplasma bovis pneumonia in feedlot cattle and dairy calves in Argentina

Mycoplasma bovis has emerged as an important cause of feedlot pneumonia in many countries. The aim of this paper is to describe six cases of bovine Mycoplasma pneumonia in five different premises in Argentina. Gross examination revealed chronic bronchopneumonia with multiple foci of caseous necrosis...

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Bibliographic Details
Authors: Margineda, Carlos A., Zielinski, Gustavo O., Jurado, Susana Beatriz, Alejandra, Ferrella, Mozgovoj, Marina Valeria, Alcaraz, Ana C., López, Alfonso
Format: article
Status:Published version
Publication Date:2017
Country:Argentina
Institution:Consejo Nacional de Investigaciones Científicas y Técnicas
Repository:CONICET Digital (CONICET)
Language:English
OAI Identifier:oai:ri.conicet.gov.ar:11336/76294
Online Access:http://hdl.handle.net/11336/76294
Access Level:Open access
Keyword:CHRONIC BRONCHOPNEUMONIA
ELECTRON MICROSCOPY
FEEDLOT
IMMUNOHISTOCHEMISTRY
MYCOPLASMA BOVIS
https://purl.org/becyt/ford/4.3
https://purl.org/becyt/ford/4
Description
Summary:Mycoplasma bovis has emerged as an important cause of feedlot pneumonia in many countries. The aim of this paper is to describe six cases of bovine Mycoplasma pneumonia in five different premises in Argentina. Gross examination revealed chronic bronchopneumonia with multiple foci of caseous necrosis. Microscopically, these contained a necrotic center with abundant hypereosinophilic granular material surrounded by granulation tissue. Affected lung tested positive for M. bovis by immunohistochemistry and electron microscopy revealed membranous structures compatible with Mycoplasma spp. To our knowledge, this is the first report of M. bovis pneumonia in Argentina.