Efficiency of hCG for Inducing Resumption of Ovarian Cyclicity and Synchronized Ovulations during the Seasonal Anestrous in Sheep

This research aimed to evaluate whether the administration of hCG at the time of removal of a progesterone device may be effective at inducing estrus and ovulations in sheep during the natural seasonal anestrous, by comparing reproductive outputs (induction and duration of estrus, follicle developme...

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Autores principales:	Zurisaday Santos-Jimenez, César A. Meza-Herrera, Guadalupe Calderon-Leyva, Paula Martinez-Ros, Juan M. Guillen-Muñoz, Antonio Gonzalez-Bulnes
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	anestrous sheep induction estrus hCG induction ovulation Veterinary medicine SF600-1100 Zoology QL1-991
Acceso en línea:	https://doaj.org/article/f1b6fd2eee8646fcb6c3d80ca3001dc1
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spelling	oai:doaj.org-article:f1b6fd2eee8646fcb6c3d80ca3001dc12021-11-25T16:17:30ZEfficiency of hCG for Inducing Resumption of Ovarian Cyclicity and Synchronized Ovulations during the Seasonal Anestrous in Sheep10.3390/ani111131592076-2615https://doaj.org/article/f1b6fd2eee8646fcb6c3d80ca3001dc12021-11-01T00:00:00Zhttps://www.mdpi.com/2076-2615/11/11/3159https://doaj.org/toc/2076-2615This research aimed to evaluate whether the administration of hCG at the time of removal of a progesterone device may be effective at inducing estrus and ovulations in sheep during the natural seasonal anestrous, by comparing reproductive outputs (induction and duration of estrus, follicle development, ovulation, ovulation rate, and pregnancy rates) in ewes treated with eCG or only saline solution at the time of CIDR removal. Whereas results demonstrated no response in the control non-treated group, the largest rate of narrowly synchronized estrus signs and ovulations occurred in the eCG-group. The administration of hCG was effective at inducing estrus, promote follicular growth and a delayed yet significant ovulation (>84%) on day 10 after CIDR removal; moreover, an increased embryonic implantation rate was also observed. Moreover, if the hCG ewes remain exposed to active males for some days, said strategy could be adopted, aiming to induce pregnancies by natural mating in a short period of time.Zurisaday Santos-JimenezCésar A. Meza-HerreraGuadalupe Calderon-LeyvaPaula Martinez-RosJuan M. Guillen-MuñozAntonio Gonzalez-BulnesMDPI AGarticleanestrous sheepinduction estrushCGinduction ovulationVeterinary medicineSF600-1100ZoologyQL1-991ENAnimals, Vol 11, Iss 3159, p 3159 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	anestrous sheep induction estrus hCG induction ovulation Veterinary medicine SF600-1100 Zoology QL1-991
spellingShingle	anestrous sheep induction estrus hCG induction ovulation Veterinary medicine SF600-1100 Zoology QL1-991 Zurisaday Santos-Jimenez César A. Meza-Herrera Guadalupe Calderon-Leyva Paula Martinez-Ros Juan M. Guillen-Muñoz Antonio Gonzalez-Bulnes Efficiency of hCG for Inducing Resumption of Ovarian Cyclicity and Synchronized Ovulations during the Seasonal Anestrous in Sheep
description	This research aimed to evaluate whether the administration of hCG at the time of removal of a progesterone device may be effective at inducing estrus and ovulations in sheep during the natural seasonal anestrous, by comparing reproductive outputs (induction and duration of estrus, follicle development, ovulation, ovulation rate, and pregnancy rates) in ewes treated with eCG or only saline solution at the time of CIDR removal. Whereas results demonstrated no response in the control non-treated group, the largest rate of narrowly synchronized estrus signs and ovulations occurred in the eCG-group. The administration of hCG was effective at inducing estrus, promote follicular growth and a delayed yet significant ovulation (>84%) on day 10 after CIDR removal; moreover, an increased embryonic implantation rate was also observed. Moreover, if the hCG ewes remain exposed to active males for some days, said strategy could be adopted, aiming to induce pregnancies by natural mating in a short period of time.
format	article
author	Zurisaday Santos-Jimenez César A. Meza-Herrera Guadalupe Calderon-Leyva Paula Martinez-Ros Juan M. Guillen-Muñoz Antonio Gonzalez-Bulnes
author_facet	Zurisaday Santos-Jimenez César A. Meza-Herrera Guadalupe Calderon-Leyva Paula Martinez-Ros Juan M. Guillen-Muñoz Antonio Gonzalez-Bulnes
author_sort	Zurisaday Santos-Jimenez
title	Efficiency of hCG for Inducing Resumption of Ovarian Cyclicity and Synchronized Ovulations during the Seasonal Anestrous in Sheep
title_short	Efficiency of hCG for Inducing Resumption of Ovarian Cyclicity and Synchronized Ovulations during the Seasonal Anestrous in Sheep
title_full	Efficiency of hCG for Inducing Resumption of Ovarian Cyclicity and Synchronized Ovulations during the Seasonal Anestrous in Sheep
title_fullStr	Efficiency of hCG for Inducing Resumption of Ovarian Cyclicity and Synchronized Ovulations during the Seasonal Anestrous in Sheep
title_full_unstemmed	Efficiency of hCG for Inducing Resumption of Ovarian Cyclicity and Synchronized Ovulations during the Seasonal Anestrous in Sheep
title_sort	efficiency of hcg for inducing resumption of ovarian cyclicity and synchronized ovulations during the seasonal anestrous in sheep
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f1b6fd2eee8646fcb6c3d80ca3001dc1
work_keys_str_mv	AT zurisadaysantosjimenez efficiencyofhcgforinducingresumptionofovariancyclicityandsynchronizedovulationsduringtheseasonalanestrousinsheep AT cesaramezaherrera efficiencyofhcgforinducingresumptionofovariancyclicityandsynchronizedovulationsduringtheseasonalanestrousinsheep AT guadalupecalderonleyva efficiencyofhcgforinducingresumptionofovariancyclicityandsynchronizedovulationsduringtheseasonalanestrousinsheep AT paulamartinezros efficiencyofhcgforinducingresumptionofovariancyclicityandsynchronizedovulationsduringtheseasonalanestrousinsheep AT juanmguillenmunoz efficiencyofhcgforinducingresumptionofovariancyclicityandsynchronizedovulationsduringtheseasonalanestrousinsheep AT antoniogonzalezbulnes efficiencyofhcgforinducingresumptionofovariancyclicityandsynchronizedovulationsduringtheseasonalanestrousinsheep
_version_	1718413292646432768

Efficiency of hCG for Inducing Resumption of Ovarian Cyclicity and Synchronized Ovulations during the Seasonal Anestrous in Sheep

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