Author's Organization:Department of Theriogenology, Faculty of Veterinary Medicine, Hokkaido University Suginoko Animal Hospital Department of Theriogenology, Faculty of Veterinary Medicine, Hokkaido University Department of Theriogenology, Faculty of Veterinary Medicine, Hokkaido University
Published: August 15, 1992Received: February 04, 1992Available on J-STAGE: February 15, 2008Accepted: April 28, 1992
Advance online publication: -
Revised: -