Successful embryo transfer from Hokkaido native pony after artificial insemination with frozen semen

The Journal of Veterinary Medical Science

Yasuyuki ITAMI¹  M A HANNAN²  Shingo HANEDA³ 

[1] Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, U.S.A.;Department of Clinical Veterinary Sciences, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan;Field Center of Animal Science and Agriculture, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan

关键词: artificial insemination;    embryo transfer;    frozen semen;    hokkaido native pony;    progesterone;   

DOI  :  10.1292/jvms.18-0414

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

There has been no report of equine embryo transfer in Japan for the last 24 years. Our objective was to establish an effective protocol for embryo transfer in domestic horse. A Hokkaido native pony was bred by deep-horn artificial insemination with frozen semen from a Connemara pony. Embryo collection was performed using a non-surgical method on day 7. Two embryos were obtained from three flushes (67% recovery) and were transferred fresh into crossbred recipient mares. Both recipient mares were diagnosed pregnant (100% pregnancy rate) 5 days after embryo transfer and had normal progesterone levels until the end of the observation on day 35 of gestation. This is the first successful embryo transfer in Japan by artificial insemination using frozen semen. Embryo transfer technology could be extremely useful in improving the productivity of Japanese domestic and special riding horses.

【 授权许可】

Unknown