Estrus synchronization and superovulation in goats: a review

Abdullah, Ramli and Wan-Khadijah, W.E. and Rahman, A.N.M.A. (2008) Estrus synchronization and superovulation in goats: a review. Journal of Biological Sciences, 8 (7). pp. 1129-1137. ISSN 17273048, DOI

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The study was intended to review the recent developments and advances of estrus synchronization and superovulation protocols in goats with a view to improve oocytes/embryo recovery for In Vitro Production (IVP) efficiencies. Although a number of estrus synchronizing protocols has been developed in goat the most widely used one is the treatment of progesterone for 9-11 days followed by a luteolytic dose of prostaglandin administered in the period 48 h prior to removal of intravaginal sponge. Until now, Controlled Internal Drug Release (CIDR) device and subcutaneous implants are more preferable than sponges. Ovulation in goat can be synchronized more precisely by administering Gonadotrophin Releasing Hormone (GnRH) around the time of estrus that improves the success of fixed-time Artificial Insemination (AI) and oocytes or embryos collection at a controlled stage. Superovulation is the hormonal treatment for increasing a large number of oocytes that ultimately accelerate genetic improvement in any species. Generally an exogenous follicle-stimulating gonadotrophin is administered that mimics the effect of Follicle Stimulating Hormone (FSH) near the end of the luteal phase of the cycle (9-11 days) or around 48 h before the end of the synchronizing treatments. The major commercial products applied are equine Chorionic Gonadotrophin (eCG) or Pregnant Mare Serum Gonadotrophin (PMSGT) and FSH. This review paper describes estrus synchronization, ovarian superovulation as well as the normal physiology of estrous cycle and ovulation in goats. © 2008 Asian Network for Scientific Information.

Item Type: Article
Additional Information: Institute of Biological Sciences, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: eCG, Estrous cycle, Follicular wave, FSH, Goat, Oocytes, Ovulation, chorionic gonadotropin, estrogen, follitropin, luteinizing hormone, progesterone, prolactin, seric gonadotropin, anestrus, artificial insemination, cell nucleus transplantation, diestrus, estrus cycle, fertilization in vitro, intracytoplasmic sperm injection, luteal phase, nonhuman, oocyte retrieval, ovary follicle, review, superovulation, Capra hircus, Equidae
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science > Institute of Biological Sciences
Depositing User: Miss Malisa Diana
Date Deposited: 03 Oct 2013 01:42
Last Modified: 28 Apr 2021 08:04

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