Cattle Diseases: Bovine Respiratory Syncytial Virus (BRSV) and Parainfluenza-3 (PI-3)
E. J. Richey
University of Florida
Bovine Respiratory Syncytial Virus (BRSV)
For many years, the feedlot industry identified a respiratory problem in cattle that was diagnosed as an allergic reaction to changes in feed. Because of the microscopic lesions found in the lungs, a virus was suspected, but when tissue samples were submitted to the laboratory, no virus could be found. It was later determined that the virus would not survive the transport techniques. Only after taking the lab to the field was the virus isolated.