The impact of nutrition on the health and welfare of horses : 5th European Workshop Equine Nutrition : Cirencester, United Kingdom, 19-22 September 2010 / by European Workshop on Equine Nutrition (5th : 2010 : Cirencester, England), Ellis, A. D., editor, Longland, A. C., editor, Coenen, M., editor, Miraglia, N., editor, European Association for Animal Production