Marrit received her master's degree in Animal Behavior from the Wageningen University, the Netherlands and the doctorate in Veterinary Medicine from the University of Utrecht, the Netherlands. Marrit is the author of the books "Sows: a practical guide to lactation management and fertility" and “Piglets: a practical guide to successful pig production”. She is a lecturer at the National Veterinary Qualification Training Institute in the Netherlands and a biosafety management expert from the famous veterinary and pig farms in the Netherlands.