PMID: 15226602Jul 1, 2004Paper

Retrospective analysis of the efficacy of controlled internal drug release in follicular cysts in an embryo donor beef herd

The Journal of Reproduction and Development
J TodorokiHiroyuki Kaneko

Abstract

We investigated the efficacy of a controlled internal drug release (CIDR) device in the reproductive management of an embryo donor beef herd. Superovulation of embryo donors was routinely induced by a combination of FSH and prostaglandin F(2)alpha analogue (PGF(2)alpha) at intervals of a few months, and after embryo recovery estrus of the donors was synchronized with PGF2(2)alpha. Between 1996 and 1998, approximately 20% of donors were diagnosed as having follicular cysts every year. Twenty-eight cases of follicular cysts recorded between 1997 and 1998 were treated with a CIDR device for 14 days to evaluate the efficacy of CIDR in resolving follicular cysts in donor herds. Initial recovery was defined as the occurrence of ovulation with estrous behavior and subsequent formation of a corpus luteum after removal of the CIDR. Initial recovery was recognized in all cases (n=28). Follicular cysts did not recur after repeated embryo recovery in 64% of the initially recovered donors, but in 36% of affected donors cysts recurred after the next embryo recovery. Subsequently, with a CIDR device instead of PGF(2)alpha, we synchronized estrus after embryo recovery in the same herd from 1999 to 2000, to investigate the ability of CIDR to pr...Continue Reading

References

Jan 1, 1993·Journal of Reproduction and Fertility·J D SavioD Wolfenson
May 1, 1997·Journal of Dairy Science·H A Garverick
Sep 16, 1999·The Journal of Veterinary Medical Science·A Y RibaduT Nakao
Feb 11, 2003·The Journal of Veterinary Medical Science·Victor Chisha ZuluYutaka Sawamukai

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Citations

Nov 26, 2008·Reproduction : the Official Journal of the Society for the Study of Fertility·M A VelazquezH Niemann
Mar 16, 2006·The Journal of Reproduction and Development·Junichi Todoroki, Hiroyuki Kaneko
Sep 15, 2020·Journal of Dairy Science·C A C FernandesR A S Teodoro

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