Organic animal farming is growing rapidly but faces a range of challenges in areas such as nutrition, health and welfare. This volume surveys the wealth of research addressing these challenges. The book start with a review of organic principles and the key question of the right breeds for organic farming. It then discusses forage-based nutrition and animal health as well as safety and environmental impact. The volume goes on to assess different types of organic animal farming, from smallholder tropical to pastoral rangeland systems. It concludes by focussing on key issues in the organic farming of beef and dairy cattle, poultry, pigs, sheep and goats, fish and bees. Edited by two leading authorities in the field, and with an international team of expert authors, this will be a standard reference for all those interested in understanding, improving and promoting organic animal farming.