Geert R.G. Opsomer (26/9/1965) graduated as a DVM at the Gent University (Gent, Belgium) in 1989.Immediately after graduation, he started to work at the department of Reproduction, Obstetrics and Herd Health at the same university. His main interest was going to fertility and herd health control in high yielding dairy herds. In 1995 he obtained a masters degree (Ms) in animal production with a thesis entitled: 'Energy metabolism in the high yielding dairy cow'. In 1999 he defended his PhD thesis entitled: 'Postpartum anoestrus in high yielding dairy cows: a field study'. In November 2002 he became diplomate of the European College of Animal Reproduction (ECAR), and in 2003 diplomate of the European College of Bovine Health Medicine (ECBHM). At the moment he is associate professor of bovine herd health at the Veterinary Faculty of the Gent University. Besides educating undergraduate and graduate students, he is currently supervising multiple PhD students researching a variety of aspects of bovine herd health and reproduction.