SciELO - Scientific Electronic Library Online

vol.41 issue4Some physiological and nutritional factors affecting the incidence of post-weaning diarrhea in pigletsDouble outlet right ventricle and left ventricle hypoplasia in a dog. A case report author indexsubject indexsearch form
Home Pagealphabetic serial listing  

Services on Demand




Related links

  • Have no similar articlesSimilars in SciELO


Veterinaria México

Print version ISSN 0301-5092


RAMIREZ ROMERO, Rafael et al. Immunohistochemical demonstration of Mycoplasma bovis in chronic lung lesions in feedlot cattle. Vet. Méx [online]. 2010, vol.41, n.4, pp.289-296. ISSN 0301-5092.

Bovine feedlots are intensive production systems of significant importance in México, United States of America and Canadá. Respiratory diseases are the single most important cause of morbidity and mortality in feedlot cattle. Herein, the gross and microscopic findings in the lungs of cattle with unusually persistent pneumonia unresponsive to aggressive antibiotic treatment in feedlots localized in General Escobedo, Nuevo Leon; Morelia, Michoacan; Mexicali, Baja California, and Culiacan, Sinaloa, Mexico are described. Eight chronic suppurative bronchopneumonia cases with multifocal areas of casseous necrosis were selected. Microscopically, these lesions were bronchocentric and characterized by foci of necrosis surrounded by a pyogranulomatous reaction. Immunohistochemical studies revealed positive reaction to Mycoplasma bovis in all cases. Gross and microscopic lesions associated with M. bovis pneumonia have a conspicuous pattern. This is the first report of M. bovis causing pneumonia in feedlot cattle in Mexico.

Keywords : Mycoplasma Bovis; Chronic pneumonias; Feedlot cattle.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License