Dobrzyńska, Katarzyna – Department of pig breeding, Faculty of animal bio-engineering, University of Warmia and Mazury, Olsztyn
Dordas-Perpinya, Marta – Theriogenology Unit, Department of Clinical sciences, National College of Veterinary Medicine, Food Sciences and Engineering, Nantes
Dzikowski, Andrzej – Department of Pathophysiology, Forensic Veterinary Medicine and Administration, University of Warmia and Mazury in Olsztyn, Oczapowskiego St. 13, 10-719 Olsztyn, Poland