This landmark new text charts the latest developments in economic research relevant to farm animal welfare. A range of global experts and key opinion leaders outline the challenges in achieving sustainable livestock production while improving farm profit, climate change and animal welfare, and make policy-relevant recommendations for the future. This is a theoretical yet practical book that examines: - the origins of farm animal welfare, cross-disciplinary interactions and the future of the field; - consumer demand and changing preferences as animal welfare rises up the social agenda; - the impact political organisations such as the EU and WTO have on animal welfare. An important resource for policy makers and animal welfare scientists, economists and clinicians, this book provides a thought-provoking yet evidence-based review for all those interested in quantifying and improving farm animal welfare.