Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/56089
Type: Artigo de periódico
Title: Clinico-pathological aspects in the natural infection of Bovine Respiratory Syncytial Virus (BRSV) in extensive management of cattle in Rio Grande do Sul, Brazil
Author: Driemeier, D
Gomes, MJP
Moojen, V
Arns, CW
Vogg, G
Kessler, L
daCosta, UM
Abstract: The clinical aspects as well as the pathology, microbiology and serology of a natural Bovine Respiratory Syncytial (BRSV) infection of bovine in a herd of 600 beef cattle kept under extensive management in the State of Rio Grande do Sul, Brazil, are described. Clinically two animals had chronic cough and severe dyspnea when forced to mild physical exercise. These two animals were euthanatized and post-morten examination was performed. The macroscopic changes were of pulmonary origin, such as disseminated alveolar emphysema, focal atelectasis and marked interlobular septal thickening. The fluorescent antibody test on lung cryostat sections was positive to BRSV for both animals, and it was negative to PI-3 virus, BVDV and BHV. The BRSV was isolated from the lung of one of the animals on MDBK, and was also identified by fluorescent antibody test. No association with Chlamydia psittaci was found by ELISA performed on lung tissues. The histopathology showed syncytial cells, chronic emphysema, peribronchiolar muscle layer hypertrophy and squamous metaplasia of bronchial and bronchiolar epithelia. The serology to detect antibodies to BRSV resulted in 79% of positives from the first specimen collection. In this group of young animals some of them had a cough. The second samples collected 6 months later were from animals of different age groups resulting in 17.3% of positives. This is the first report on clinical BRSV infection in Brazil.
Subject: BRSV
bovine
extensive management
virology
serology
pathology
Respiratory Complex
Country: Brasil
Editor: Revista Pesquisa Veterinaria Brasileira
Rights: aberto
Identifier DOI: 10.1590/S0100-736X1997000200006
Date Issue: 1997
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

Files in This Item:
File Description SizeFormat 
WOSA1997XN99400006.pdf271.51 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.