1. Irrigation and Farm Water Branch, Alberta Agriculture and Forestry, Lethbridge, Alberta Canada, T1J 4V6
2. Feedlot Health Management Services, Ltd., Okotoks, Alberta Canada, T1S 2A2
3. Agriculture and Agri-Food Canada, Lethbridge, Alberta Canada, T1J 4B1
4. Microbiology, Immunology and Infectious Diseases, University of Calgary, Calgary, Alberta Canada, T1Y 6J4
5. Department of Pathobiology, University of Guelph, 50 Stone Road East, Guelph, Ontario Canada, N1G 2W1