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Synchronization of Oestrus in Goats with Progestogen Sponges and Short Term Combined FGA, PGF2α Protocols

Authors: G. Martemucci, D. Casamassima, A. G. D'Alessandro

Abstract:

The study aimed to evaluated the reproductive performance response to short term oestrus synchronization during the transition period. One hundred and sixty-five indigenous multiparous non-lactating goats were subdivided into the following six treatment groups for oestrus synchronization: NT control Group (N= 30), Fe-21d, FGA vaginal sponge for 21days+eCG at 19thd; FPe- 11d, FGA 11d + PGF2α and eCG at 9th d; FPe-10d, FGA 10d+ PGF2α and eCG at 8th d; FPe-9d, FGA 9d +PGF2α and eCG at 7thd; PFe-5d, PGF2α at d0 + FGA 5d + eCG at 5thd. The goats were natural mated (1 male/6 females). Fecundity rates (n. births /n. females treated x 100) were statistically higher (P < 0.05) in short term FPe-9d (157.9%), FPe- 11d (115.4%), FPe-10d (111.1%) and PFe-5d (107.7%) groups compared to the NT control Group (66.7%).

Keywords: Goats, oestrus synchronization, short-term protocols.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1333720

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References:


[1] R. Gordon, "Controlled reproduction in sheep and goats. In: Artificial control of estrus and ovulation", Gordon IR (Ed.), CAB International, New York, 1997, pp. 87-89.
[2] W. Holtz, "Recent developments in assisted reproduction in goats", Small Rumin. Res., Vol. 60, pp 95-110, 2005.
[3] C. Vi├▒oles, M. Forsberg, G. Banchero, and E. Rubianes, "Effect of long-term and short-term progestagen treatment on follicular development and pregnancy rate in cyclic ewes", Theriogenology, vol. 55, pp. 993-1004, 2001.
[4] M. G. Diskin, E. G. Austin, and J. F. Roche, "Exogenous hormonal manipulation of ovarian activity in cattle". Dom. Anim. Endocr., vol. 23, pp. 211-228, 2002.
[5] O. J. Ginther, and K. Kot, "Follicular dynamics during the ovulatory season in goats", Theriogenology, vol. 42, pp. 987-1001. 1994
[6] A. Menchaca, and E. Rubianes, "Relation between progesterone concentrations during the early luteal phase and follicular dynamics in goats", Theriogenology, vol. 57, pp. 1411-1419, 2002.
[7] G.W. Snedecor, and W. G. Cochran, Statistical Methods, 7th ed. The Iowa State University Press, Ames, USA., 1980.
[8] O. Gaston-Parry, K. Heasman, J. K. E. Nemorin, and T. J., Robinson,. "A radioimmunoassay for fluorogestone acetate (FGA) and its application to the measurement of plasma FGA and progesterone in ewes treated with FGA-impregnated intravaginal sponges", Aust. J. Biol. Sci. vol. 41, pp. 57-67,.1988.
[9] C. Vi├▒oles, A. Meikle, M. Forsberg, and E. Rubianes, "The effect of subluteal levels of exogenous progesterone on follicular dynamics and endocrine patterns during the luteal phase of the ewe. Theriogenology, vol. 51, pp. 1351-1361, 1999.
[10] T. D. Quinlivan, and T. J. Robinson , "Numbers of spermatozoa in the genital tract after artificial insemination of progestagen-treated ewes" J. Reprod. Fert., vol. 19, pp. 73-86, 1969
[11] J. M. Corteel, B. Leboeuf, and G. Baril, "Artificial breeding of adult goats and kids induced with hormones to ovulate outside the breeding season". Small Rum. Res., vol. 1, pp. 19-33, 1988.
[12] B. Leboeuf, D. Forgerit, D. Bernelas, J. L. Pougnard, E. Senty, and M. A., Driancourt, Theriogenology, vol. 60, pp. 1371ÔÇö1378, 2003.
[13] G. Martemucci, and A. G. D-Alessandro, "Strategie di miglioramento dell-efficienza riproduttiva negli ovini. Sincronizzazione farmacologia degli estri e delle ovulazioni. (Strategies for improve reproductive efficiency in sheep: pharmacological synchronization of estrus and ovulation)", Agricoltura Ricerca, vol. 183, pp. 3-18, 1999.
[14] E. Rubianes, and A. Menchaca, "The pattern and manipulation of ovarian follicular growth in goats", Anim. Reprod. Sci., vol. 78, pp. 271-287, 2003.
[15] A. Menchaca, and E. Rubianes, "New treatments associated with timed artificial insemination in small ruminants", Reprod. Fert. Dev., vol. 16, pp. 403-413, 2004.