[1] Univ Laval, Dept Anim Sci, Quebec City, PQ G1K 7P4, Canada
[2] Univ British Columbia, Anim Welf Program, Vancouver, BC V6T 1Z4, Canada
[3] Univ Autonoma Metropolitana Xochim, Dept Prod Agr & Anim, Mexico City 04960, DF, Mexico
[4] McGill Univ, Dept Anim Sci, Montreal, PQ H9X 3V9, Canada
[5] Valacta, Dairy Prod Ctr Expertise Quebec Atlantic Canada, Ste Anne De Bellevue, PQ H9X 3R4, Canada
[6] Agr & Agri Food Canada, Pacific Agrifood Res Ctr, Agassiz, BC V0M 1A0, Canada