1. Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada T6G 2P5
2. Gowans Feed Consulting, Wainwright, Alberta, Canada T9W 1N3
3. Alberta Agriculture and Rural Development, Edmonton, Alberta, Canada T6H 5T6
4. Canadian International Grains Institute, Winnipeg, Manitoba, Canada R3C 3G7