Dr. Cornelis Franciscus Maria de Lange, known to all as Kees, the son of Cornelis and Petronella de Lange, was born on April 19, 1961 in the farming community of De Weere, The Netherlands. He earned a Bachelor of Science degree in animal science in 1983 and followed that with a M.Sc. degree in animal nutrition in 1985, both from the Agricultural University in Wageningen, The Netherlands. He then moved to Canada to study with Dr. Willem C. Sauer at the University of Alberta (Edmonton, AB, Canada), graduating with a Ph.D. in animal nutrition in 1988. For 3 yr, he was employed as a Swine Nutritionist and Research and Technical Service Manager with Ralston‐Purina Canada in Woodstock, ON, Canada. In 1992, he joined the Prairie Swine Centre (Saskatoon, SK, Canada) as a Research Scientist – Nutrition before moving back to Ontario to join the faculty in the Department of Animal and Poultry Science of the University of Guelph in 1994. He was promoted to Associate Professor in 1998 and then to Full Professor in 2003, a position he held until his death from melanoma on August 1, 2016.