Coronavirus infection in intensively managed cattle with respiratory disease
| Autor: | I Lugton, KE Dawood, AJ Read, Paul Hick, L Gabor, M Hornitzky, F Busfield, PD Kirkland |
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| Rok vydání: | 2012 |
| Předmět: |
Population
Cattle Diseases medicine.disease_cause Virus Disease Outbreaks Production Animals medicine Animals Animal Husbandry education Pasteurella multocida Respiratory Tract Infections Bovine coronavirus Coronavirus Coronavirus Bovine education.field_of_study feedlots General Veterinary biology Reverse Transcriptase Polymerase Chain Reaction Respiratory disease Australia Outbreak General Medicine biology.organism_classification medicine.disease Virology Bovine Respiratory Disease Complex bovine coronavirus cattle bovine respiratory disease complex Nasal Cavity Coronavirus Infections |
| Zdroj: | Australian Veterinary Journal |
| ISSN: | 0005-0423 |
| Popis: | Background A detailed laboratory investigation identified bovine coronavirus (BCoV) as the aetiological agent in an outbreak of respiratory disease at a semi-intensive beef cattle feedlot in south-east Australia. The outbreak caused 30% morbidity in the resident population and also affected two cohorts of cattle that were newly introduced to the property. Methods At slaughter, pulmonary consolidation and inflammatory lesions in the trachea were identified in 15 of 49 animals. Pasteurella multocida or Histophilus somni was cultured from 3 of 7 animals with lesions. Histopathological examination revealed multifocal non-suppurative bronchointerstitial pneumonia with formation of epithelial syncytial cells, sometimes associated with suppurative bronchopneumonia. Results BCoV was detected in nasal swabs and pulmonary lesions using real-time reverse transcriptase–polymerase chain reaction (qRT-PCR) assay and virus isolation. There was serological evidence of previous exposure to bovine viral diarrhoea virus, bovine respiratory syncytial virus and bovine parainfluenza virus type 3, but not to bovine herpesvirus type 1. None of these viral pathogens or Mycoplasma bovis was identified by qRT-PCR. Conclusion This is believed to be the first report of BCoV in association with bovine respiratory disease complex in Australia. |
| Databáze: | OpenAIRE |
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