John is the Principal Veterinary Research Bioscientist at the National Dairy Research Centre in Ireland. His research interests include biosecurity and infectious diseases, cow fertility, youngstock health and rearing and animal welfare. He carries out research in dairy and beef cattle and in sheep. John is a National and European board-accredited registered veterinary specialist. He has 35 years’ experience in private and public (government) veterinary practice and in animal health/welfare and theriogenology research in Ireland, New Zealand and in Australia. John currently collaborates on research projects in Belgium, Hungary, Poland, Scotland and Switzerland. He has delivered award-winning lectures / workshops / wet labs by invite in over 25 countries worldwide, including numerous plenary lectures at world veterinary congresses. John is a lecturer on nine under/postgraduate veterinary / agriculture / farmer courses in Ireland and the UK. John is an Editorial Board member of five journals including Animal Reproduction Science, Reproduction in Domestic Animals and is Deputy Editor of the Irish Veterinary Journal. He has been invited to referee for over 60 international bioscience journals. John is also Co-Editor of the books Farm Health and Productivity Management of Dairy Young Stock and Bovine Perinatology. His research has been published in over 100 peer-review papers and also in numerous textbook chapters.