Affiliation: | 1. WALTHAM Centre for Pet Nutrition, Freeby Lane, Waltham-on-the-Wolds, Melton Mowbray, Leicestershire LE14 4RT, UK;2. Department of Large Animal Clinical Sciences, D-202 Veterinary Medical Center, College of Veterinary Medicine, Michigan State University, East Lansing, MI 48824, USA |