 He was a faculty member in the Department of Biochemistry, University of Florida from 1970-1985 and is currently a Curators' Professor of Animal Science at the University of Missouri.From 1998-2000 Roberts was Chief Scientist with the USDA’s Competitive Grants Program (the National Research Initiative).He also served on the National Research Council’s Committee that published recommendations to the Federal Drug Agency on concerns regarding the use of genetically modified animals for food (Animal Biotechnology