1. Department of Animal Science, University of Manitoba, 12 Dafoe Road, Winnipeg, Manitoba R3T 2N2, Canada
2. Guelph Research and Development Centre, Agriculture and Agri-Food Canada, 93 Stone Road West, Guelph, Ontario N1G 5C9, Canada
3. Jefo Nutrition Inc., Saint-Hyacinthe, Quebec J2S 7B6, Canada