High fertility using artificial insemination during deep anoestrus after induction and synchronisation of ovulatory activity by the "male effect" in lactating goats subjected to treatment with artificial long days and progestagens

Animal Reproduction Science
Maria-Teresa Pellicer-RubioP Chemineau

Abstract

The response to the male effect was studied in two Saânen and two Alpine flocks over 5 consecutive years. Adult male and female goats were exposed to artificial long days (16h light and 8h darkness, 16L:8D) in open barns for approximately 3 months (between December 1 and April 15) followed by a natural photoperiod. Goats were treated for 11 days with fluorogestone acetate (FGA) or progesterone (CIDR) immediately before joining. Bucks carrying marking harnesses with adapted aprons joined females 49-63 days after the end of the long-day treatment (between April 30 and June 5) and were left with them for 5 days. In experiment 1 (n=142), FGA- and CIDR-treated goats were inseminated at a time based on the detection of oestrus. Two insemination groups were distinguished by the occurrence of marking over a 48-h period. Earlier (group 1) and later (group 2) buck-marked goats received one single insemination 12-24h or 0-12h after marking, respectively. Unmarked goats were inseminated along with group 2. In experiment 2 (n=344), FGA-treated goats were inseminated 52 and 70 h (52 h:70 h group) or 52 and 75 h (52 h:75 h group) after joining. In experiment 3 (n=285), FGA-treated goats were inseminated 52 h (1-AI group) or 52 and 75 h (2-AI ...Continue Reading

References

Sep 1, 1987·Journal of Reproduction and Fertility·J Pelletier, J Thimonier
Mar 1, 1994·The Veterinary Quarterly·J W Hesselink, M A Taverne
Jan 4, 2003·Reproduction, Nutrition, Development·Eric HoudeauMarie-Jeanne Prud'homme
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Citations

Jul 25, 2008·Reproduction in Domestic Animals = Zuchthygiene·B LeboeufR de Cremoux
Nov 4, 2015·Animal : an International Journal of Animal Bioscience·J A DelgadilloJ A Flores
Oct 4, 2014·Reproduction in Domestic Animals = Zuchthygiene·A Lopez-SebastiánJ Santiago-Moreno
May 14, 2016·Theriogenology·Hugues DardenteMaria-Teresa Pellicer-Rubio
Jul 25, 2008·Reproduction in Domestic Animals = Zuchthygiene·P ChemineauB Malpaux
Jun 3, 2020·Reproduction in Domestic Animals = Zuchthygiene·Marina Monteiro NettoJeferson Ferreira Fonseca
Jul 31, 2019·Asian-Australasian Journal of Animal Sciences·Jun LuoShuang Sun
Jan 11, 2011·The Veterinary Clinics of North America. Food Animal Practice·José A AbeciaAntonio González-Bulnes

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