Macromineral Absorption in the Black Rhinoceros (Diceros bicornis) Compared with the Domestic Horse

*Division of Zoo Animals, Exotic Pets and Wildlife, Vetsuisse Faculty, University of Zurich, Switzerland; yInstitute of Animal Physiology, Physiological Chemistry and Animal Nutrition, Ludwig-Maximilians-University Munich, Oberschleissheim, Germany; **GSF National Research Center for Environment and Health, Institute for Ecological Chemistry, Neuherberg, Germany; zSaint Louis Zoo, St. Louis, MO; yyZoological Society of London, Whipsnade Wild Animal Park, Dunstable, UK; Zoological Garden of Cologne, Cologne, Germany; Institute for Zoo and Wildlife Research (IZW), Berlin, Germany; and Institute of Animal Sciences, Department of Nutrition, University of Bonn, Germany