Statistics, Veterinary Microbiology and Preventive Medicine, Veterinary Diagnostic and Production Animal Medicine
Journal or Book Title
BMC Veterinary Research
Bibersteinia trehalosi causes respiratory disease in ruminants particularly in wild and domestic sheep. Recently, there has been an increased number of B. trehalosi isolates obtained from diagnostic samples from bovine respiratory disease cases. This study evaluated the role of B. trehalosi in bovine respiratory disease using an intra-tracheal inoculation model in calves. Thirty six cross bred 2–3 month old dairy calves were inoculated intra-tracheally with either leukotoxin negative B. trehalosi, leukotoxin positive B. trehalosi isolate, Mannheimia haemolytica, a combination of leukotoxin negative B. trehalosi and M. haemolytica or negative control. Calves were euthanized and necropsy performed on day 10 of study. B. trehalosi inoculated calves did not have increased lung involvement compared to control calves. Additionally, B. trehalosiwas only cultured once from the lungs of inoculated calves at necropsy. Based on these findings B. trehalosi may not be a primary pathogen of respiratory disease in cattle. Culture of B. trehalosifrom diagnostic submissions should not be immediately identified as a primary cause of respiratory disease.
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Christy J. Hanthorn, et al
Hanthorn, Christy Jo; Dewell, Reneé; Cooper, Vickie L.; Frana, Timothy S.; Plummer, Paul J.; Wang, Chong; and Dewell, Grant A., "Randomized Clinical Trial to Evaluate the Pathogenicity of Bibersteinia trehalosi in Respiratory Disease among Calves" (2014). Veterinary Diagnostic and Production Animal Medicine Publications. 40.