1. Department of Animal Biosciences, University of Guelph, Guelph, ON N1G 2W1, Canada
2. Trouw Nutrition, St. Mary's, ON N4X 1C7, Canada
3. Prairie Swine Centre, Inc., Saskatoon, SK S7H 5N9, Canada
4. Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
5. Protein Industries Canada, Regina, SK S4P 1Y1, Canada