Author's Organization:Department of Theriogenology, Faculty of Agriculture, Gifu University Hokkaido Kushiro Livestock Hygine Service Center Institute of Applied Zoology, Faculty of Agriculture, Hokkaido University Shiretoko National Park Nature Center Department of Theriogenology, Faculty of Veterinary Medicine, Hokkaido University
Published: April 15, 1991Received: July 03, 1990Available on J-STAGE: February 15, 2008Accepted: November 01, 1990
Advance online publication: -
Revised: -