Affiliation: | 1. Graduate School of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, , Obihiro, Hokkaido, 080‐8555 Japan;2. Department of Anatomy, University of Veterinary Medicine Hannover, , Hannover, D‐30173 Germany;3. Department of Theriogenology, Faculty of Veterinary Medicine, Damanhur University, , Behera, Egypt |