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Buyer beware! Disease testing newly arrived cattle to dairy farms in Ontario
David L Renaud1, Natalia Savor1, Jessica Gordon1
1Department of Population Medicine, University of Guelph, Guelph, Ontario N1G 2W1 (Renaud, Savor, Gordon, Kelton); Veterinary Science Unit, Animal Health and Welfare Branch, Ontario Ministry of Agriculture, Food and Rural Affairs, Guelph, Ontario N1G 4Y2 (Miltenburg).
Abstract:
The objective of this cross-sectional study was to evaluate the presence of infectious disease in newly arrived cattle on dairy farms in Ontario. Cattle that were more than 2 years old and arrived at dairy farms within the previous year were tested. A total 321 cattle from 56 dairy farms were sampled and had blood submitted to a diagnostic laboratory. Of all sampled cattle, 0.0%, 39.6%, 2.2%, and 1.3% tested positive for Anaplasma, bovine leukemia virus, Mycobacterium avium subsp. paratuberculosis, and Salmonella Dublin, respectively. Based on these results, it is imperative that dairy producers are vigilant to ensure they do not purchase animals with these important and untreatable infectious diseases.
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