Book excerpt: Completely revised, updated and with four new chapters on sustainability, new technologies, precision agriculture and the future of animal welfare. This book is edited by an outstanding world expert on animal welfare, it emphasizes throughout the importance of measuring conditions that compromise welfare, such as lameness, heat stress, body condition, and bruises during transport.The book combines scientific information with practical recommendations for use on commercial operations and reviews practical information on livestock handling, euthanasia, slaughter, pain relief, and assessments of abnormal behavior.