This collection reviews key research addressing key challenges faced by organic animal farming in improving yields, animal nutrition and health. Part 1 assesses current research on environmental impact, promoting animal health, enhancing naturalness and welfare. It also reviews how organic systems fit in with agroforestry, pastoralist and other smallholder farming systems. The second part of the book includes case studies from leading experts on current research in improving the farming of particular species. Chapters review challenges and opportunities in organic dairy and beef farming, sheep and goats, pigs and poultry. There are also chapters on organic aquaculture as well as organic and natural beekeeping. With its distinguished editors and international team of expert authors, this will be a standard reference for all those researching organic animal farming as well as the organic livestock farmers, organic certification and regulatory bodies.