Highly synchronous and fertile reproductive activity induced by the male effect during deep anoestrus in lactating goats subjected to treatment with artificially long days followed by a natural photoperiod

Animal Reproduction Science
Maria-Teresa Pellicer-RubioPhilippe Chemineau

Abstract

The response to the male effect was studied in two flocks of Saanen and three of Alpine goats during deep anoestrus in three consecutive years. Males and females were subjected to artificially long days for about 3 months (between December 4 and April 1) followed by a natural photoperiod. Bucks joined goats 42-63 days after the end of the long days treatment (between April 20 and June 3) and fertilisation was ensured by natural mating. In experiment 1 (n=248), female goats were treated or untreated with melatonin at the end of the long days treatment and treated or untreated for 11 days with fluorogestone acetate (FGA) before teasing. The males received melatonin implants. In experiment 2 (n=337), the factor studied was the association or non-association of the 11-day FGA treatment. Neither males nor females received melatonin implants. In experiment 3 (n=180), goats were treated for 11 days with FGA or with natural progesterone (CIDR). Neither males nor females received melatonin implants. In experiment 1, among the non-cycling goats (n=218), 99% ovulated and 81% kidded at 161+/-8 days after joining. Ninety-two percent of FGA-treated goats displayed an LH surge at 65+/-11h after teasing. Melatonin treatment did not affect any ...Continue Reading

References

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Citations

Dec 1, 2010·Animal : an International Journal of Animal Bioscience·J A Delgadillo, L I Vélez
Jul 11, 2006·Reproduction, Nutrition, Development·Philippe ChemineauDanielle Monniaux
Jun 10, 2011·Tropical Animal Health and Production·Juan Ramón Luna-OrozcoFrancisco Gerardo Véliz
Feb 14, 2012·Animal Reproduction Science·J A AbeciaA González-Bulnes
Jan 11, 2011·The Veterinary Clinics of North America. Food Animal Practice·José A AbeciaAntonio González-Bulnes
Oct 5, 2010·Animal Reproduction Science·Alice FatetBernard Leboeuf
Jul 25, 2008·Reproduction in Domestic Animals = Zuchthygiene·P ChemineauB Malpaux
Jul 25, 2008·Reproduction in Domestic Animals = Zuchthygiene·B LeboeufR de Cremoux
Oct 4, 2014·Reproduction in Domestic Animals = Zuchthygiene·A Lopez-SebastiánJ Santiago-Moreno
May 14, 2016·Theriogenology·Hugues DardenteMaria-Teresa Pellicer-Rubio
May 19, 2016·Animal Science Journal = Nihon Chikusan Gakkaihō·Marlon Knights, Doolarie Singh-Knights
Jul 31, 2019·Asian-Australasian Journal of Animal Sciences·Jun LuoShuang Sun
Oct 21, 2020·Animals : an Open Access Journal From MDPI·Kathryn J LoganFrank R Dunshea

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