Successful Birth of Pups Produced by GnRH-induced Estrus and Natural Mating in Captive Red Fox (Vulpes vulpes)
2010
Yong, H.Y., Seoul Zoo, Gwacheon, Republic of Korea | Bae, B.S., Seoul Zoo, Gwacheon, Republic of Korea | Kim, S.D., Seoul Zoo, Gwacheon, Republic of Korea | Lim, Y.M., Seoul Zoo, Gwacheon, Republic of Korea | Ha, Y.H., Seoul Zoo, Gwacheon, Republic of Korea | Oh, C.S., Seoul Zoo, Gwacheon, Republic of Korea | Kim, M.H., Seoul Zoo, Gwacheon, Republic of Korea | Jo, S.I., Seoul Zoo, Gwacheon, Republic of Korea | Yoo, M.H., Seoul Zoo, Gwacheon, Republic of Korea | Jeong, Y.J., Seoul Zoo, Gwacheon, Republic of Korea | Ro, S.C., Seoul Zoo, Gwacheon, Republic of Korea
On January 6, 2010, two months earlier than normal breeding season, a red fox vixen was implanted with synthetic GnRH analogue, Deslorelin. Blood was sampled every 2~3 days from the day of implant to identifying spermatozoa on stains of epithelial cells. Estradiol and progesterone were examined. Even though the vixen was in non-breeding season, she was mated by a male fox. Pregnancy was confirmed by canine pregnancy detection kit that detect relaxin released from placenta. Four healthy pups were born on March 9, 2010. This is the first report showing synthetic GnRH can activate ovarian function and lead to fertile estrus of red fox in non-breeding season.
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