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Online Journal of Veterinary Research©
Volume 10 (1) : 7- 16, 2006
Infrared detection and nitric oxide treatment of bovine respiratory disease
Schaefer AL1, Perry BJ2, Cook NJ3, Miller C2, Church J3, Tong AKW1, Stenzler A2
1Agriculture and Agri-Food Canada, Lacombe Research Centre, 6000 C & E Trail, Lacombe, 2Pulmonox Medical Company, Edmonton and 3Alberta Agriculture Food and Rural Development, 6, Lacombe, Alberta, Canada.
Schaefer AL, Perry BJ, Cook NJ, Miller C, Church J, Tong AKW, Stenzler A Infrared detection and nitric oxide treatment of bovine respiratory disease, Online J Vet Res 10 (1) : 7-16, 2006. In a spontaneous induction model, 11 healthy calves were exposed for 3 days to 15 multiple sourced commercial calves carrying bovine respiratory disease (BRD) viruses (2 were un-infected controls). The calves received respiratory nitric oxide gas (NO) either immediately upon exposure to the BRD carriers or upon early identification of BRD from infrared orbital scans (IRT). A third group were treated with NO upon the appearance of clinical signs. All animals treated early with NO (preventative and early detection group), displayed IRT and clinical scores (36.2 C±0.2; 2.7±0.4) similar to controls (36.3 C ±0.2; 1.4±0.5) but lower than the clinical treatment group (37.0 C±0.2; 3.9±0.4, P <0.05). The results suggest that infrared thermography is able to detect signs of BRD earlier than conventional clinical scoring systems, and that NO may be an effective adjuvant in treating bovine respiratory disease.
Key words: beef cattle, early disease detection, bovine respiratory disease, infrared thermography, nitric oxide