Author's Organization:Department of Animal Reproduction, Nippon Veterinary and Zootechnical College Department of Animal Reproduction, Nippon Veterinary and Zootechnical College Department of Animal Reproduction, Nippon Veterinary and Zootechnical College
Published: February 15, 1990Received: June 06, 1989Available on J-STAGE: February 14, 2008Accepted: October 25, 1989
Advance online publication: -
Revised: -