Gonzalo G. Mateos holds a BS in Animal Production for the Universidad Politécnica de Madrid, a PhD in Veterinary Science for the Universidad Autónoma de Barcelona, and a PhD in Animal Science (Poultry) and a post-doc position for Iowa State University. He has published 140 papers in SCI Journals and given more than 460 seminars, lectures, communications, and posters at international congresses in more than 40 countries. He was Editor in Chief of the Scientific Journal Animal Feed Science and Technology (2005-2013) and a member of the Editorial Board of Poultry Science and Animal Feed Science and Technology, in recent years.