McCorkell Robert, Wynne-Edwards Katherine, Windeyer Claire, Schaefer Al
Faculty of Veterinary Medicine, University of Calgary, 2500 University Dr. NW, Calgary, Alberta T2N 1N4 (McCorkell, Wynne-Edwards, Windeyer); Lacombe Research Centre, Agriculture and Agri-Food Canada, Lacombe, Alberta T4L 1W1 (Schaefer).
Can Vet J. 2014 Jul;55(7):688-90.
Temperature sensing ear tags were tested in 1) auction-derived calves with 50% incidence of bovine respiratory disease, and 2) specific pathogen-free calves infected with bovine virus diarrhea virus. There were no false positives, but tag placement, probe displacement, and a high threshold for activation all contributed to failure to reliably detect sick calves.