The use of hcg for inducing ovulation in sheep estrus synchronization impairs ovulatory follicle growth and fertility

Autores
Bruno Galarraga, María Macarena; Cano Moreno, Virginia; Lago Cruz, Beatriz; Encinas, María Teresa; Gonzalez Bulnes, Antonio; Martinez Ros, Paula
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Currently, there is an intense effort to find an alternative hormone to eCG to induce ovulation after estrus synchronization treatments in sheep. One of the proposed alternatives is based on the use of hCG, but the results are controversial since fertility rates are commonly affected. The present study aims to evaluate, therefore, the adequacy of hCG in protocols for the synchronization of estrus and ovulation. Ovarian follicle dynamics, occurrence of estrus behavior and subsequent ovulation, quality of corpora lutea, and pregnancy rate after controlled natural mating were assessed in two consecutive trials. The findings indicate that the low fertility rates reported for the protocols based on the administration of hCG for inducing ovulation during estrus synchronization in sheep may be related to a high occurrence of abnormal follicular growth patterns, disturbances, and retardments of ovulation and concomitant formation of follicular cysts in the treated females. These results preclude their practical application to induce ovulation concomitantly to estrous synchronization treatments.
Fil: Bruno Galarraga, María Macarena. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina
Fil: Cano Moreno, Virginia. Universidad Cardenal Herrera-CEU; España
Fil: Lago Cruz, Beatriz. Universidad Complutense de Madrid; España
Fil: Encinas, María Teresa. Universidad Complutense de Madrid; España
Fil: Gonzalez Bulnes, Antonio. Universidad Complutense de Madrid; España
Fil: Martinez Ros, Paula. Universidad Cardenal Herrera-CEU; España
Materia
ECG
ESTRUS SYNCHRONIZATION
HCG
OVULATION
SHEEP
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/136191
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling The use of hcg for inducing ovulation in sheep estrus synchronization impairs ovulatory follicle growth and fertilityBruno Galarraga, María MacarenaCano Moreno, VirginiaLago Cruz, BeatrizEncinas, María TeresaGonzalez Bulnes, AntonioMartinez Ros, PaulaECGESTRUS SYNCHRONIZATIONHCGOVULATIONSHEEPhttps://purl.org/becyt/ford/4.2https://purl.org/becyt/ford/4Currently, there is an intense effort to find an alternative hormone to eCG to induce ovulation after estrus synchronization treatments in sheep. One of the proposed alternatives is based on the use of hCG, but the results are controversial since fertility rates are commonly affected. The present study aims to evaluate, therefore, the adequacy of hCG in protocols for the synchronization of estrus and ovulation. Ovarian follicle dynamics, occurrence of estrus behavior and subsequent ovulation, quality of corpora lutea, and pregnancy rate after controlled natural mating were assessed in two consecutive trials. The findings indicate that the low fertility rates reported for the protocols based on the administration of hCG for inducing ovulation during estrus synchronization in sheep may be related to a high occurrence of abnormal follicular growth patterns, disturbances, and retardments of ovulation and concomitant formation of follicular cysts in the treated females. These results preclude their practical application to induce ovulation concomitantly to estrous synchronization treatments.Fil: Bruno Galarraga, María Macarena. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; ArgentinaFil: Cano Moreno, Virginia. Universidad Cardenal Herrera-CEU; EspañaFil: Lago Cruz, Beatriz. Universidad Complutense de Madrid; EspañaFil: Encinas, María Teresa. Universidad Complutense de Madrid; EspañaFil: Gonzalez Bulnes, Antonio. Universidad Complutense de Madrid; EspañaFil: Martinez Ros, Paula. Universidad Cardenal Herrera-CEU; EspañaMultidisciplinary Digital Publishing Institute2021-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/136191Bruno Galarraga, María Macarena; Cano Moreno, Virginia; Lago Cruz, Beatriz; Encinas, María Teresa; Gonzalez Bulnes, Antonio; et al.; The use of hcg for inducing ovulation in sheep estrus synchronization impairs ovulatory follicle growth and fertility; Multidisciplinary Digital Publishing Institute; Animals; 11; 4; 4-2021; 1-82076-2615CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3390/ani11040984info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2076-2615/11/4/984info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:10:09Zoai:ri.conicet.gov.ar:11336/136191instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:10:09.814CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The use of hcg for inducing ovulation in sheep estrus synchronization impairs ovulatory follicle growth and fertility
title The use of hcg for inducing ovulation in sheep estrus synchronization impairs ovulatory follicle growth and fertility
spellingShingle The use of hcg for inducing ovulation in sheep estrus synchronization impairs ovulatory follicle growth and fertility
Bruno Galarraga, María Macarena
ECG
ESTRUS SYNCHRONIZATION
HCG
OVULATION
SHEEP
title_short The use of hcg for inducing ovulation in sheep estrus synchronization impairs ovulatory follicle growth and fertility
title_full The use of hcg for inducing ovulation in sheep estrus synchronization impairs ovulatory follicle growth and fertility
title_fullStr The use of hcg for inducing ovulation in sheep estrus synchronization impairs ovulatory follicle growth and fertility
title_full_unstemmed The use of hcg for inducing ovulation in sheep estrus synchronization impairs ovulatory follicle growth and fertility
title_sort The use of hcg for inducing ovulation in sheep estrus synchronization impairs ovulatory follicle growth and fertility
dc.creator.none.fl_str_mv Bruno Galarraga, María Macarena
Cano Moreno, Virginia
Lago Cruz, Beatriz
Encinas, María Teresa
Gonzalez Bulnes, Antonio
Martinez Ros, Paula
author Bruno Galarraga, María Macarena
author_facet Bruno Galarraga, María Macarena
Cano Moreno, Virginia
Lago Cruz, Beatriz
Encinas, María Teresa
Gonzalez Bulnes, Antonio
Martinez Ros, Paula
author_role author
author2 Cano Moreno, Virginia
Lago Cruz, Beatriz
Encinas, María Teresa
Gonzalez Bulnes, Antonio
Martinez Ros, Paula
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv ECG
ESTRUS SYNCHRONIZATION
HCG
OVULATION
SHEEP
topic ECG
ESTRUS SYNCHRONIZATION
HCG
OVULATION
SHEEP
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.2
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv Currently, there is an intense effort to find an alternative hormone to eCG to induce ovulation after estrus synchronization treatments in sheep. One of the proposed alternatives is based on the use of hCG, but the results are controversial since fertility rates are commonly affected. The present study aims to evaluate, therefore, the adequacy of hCG in protocols for the synchronization of estrus and ovulation. Ovarian follicle dynamics, occurrence of estrus behavior and subsequent ovulation, quality of corpora lutea, and pregnancy rate after controlled natural mating were assessed in two consecutive trials. The findings indicate that the low fertility rates reported for the protocols based on the administration of hCG for inducing ovulation during estrus synchronization in sheep may be related to a high occurrence of abnormal follicular growth patterns, disturbances, and retardments of ovulation and concomitant formation of follicular cysts in the treated females. These results preclude their practical application to induce ovulation concomitantly to estrous synchronization treatments.
Fil: Bruno Galarraga, María Macarena. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina
Fil: Cano Moreno, Virginia. Universidad Cardenal Herrera-CEU; España
Fil: Lago Cruz, Beatriz. Universidad Complutense de Madrid; España
Fil: Encinas, María Teresa. Universidad Complutense de Madrid; España
Fil: Gonzalez Bulnes, Antonio. Universidad Complutense de Madrid; España
Fil: Martinez Ros, Paula. Universidad Cardenal Herrera-CEU; España
description Currently, there is an intense effort to find an alternative hormone to eCG to induce ovulation after estrus synchronization treatments in sheep. One of the proposed alternatives is based on the use of hCG, but the results are controversial since fertility rates are commonly affected. The present study aims to evaluate, therefore, the adequacy of hCG in protocols for the synchronization of estrus and ovulation. Ovarian follicle dynamics, occurrence of estrus behavior and subsequent ovulation, quality of corpora lutea, and pregnancy rate after controlled natural mating were assessed in two consecutive trials. The findings indicate that the low fertility rates reported for the protocols based on the administration of hCG for inducing ovulation during estrus synchronization in sheep may be related to a high occurrence of abnormal follicular growth patterns, disturbances, and retardments of ovulation and concomitant formation of follicular cysts in the treated females. These results preclude their practical application to induce ovulation concomitantly to estrous synchronization treatments.
publishDate 2021
dc.date.none.fl_str_mv 2021-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/136191
Bruno Galarraga, María Macarena; Cano Moreno, Virginia; Lago Cruz, Beatriz; Encinas, María Teresa; Gonzalez Bulnes, Antonio; et al.; The use of hcg for inducing ovulation in sheep estrus synchronization impairs ovulatory follicle growth and fertility; Multidisciplinary Digital Publishing Institute; Animals; 11; 4; 4-2021; 1-8
2076-2615
CONICET Digital
CONICET
url http://hdl.handle.net/11336/136191
identifier_str_mv Bruno Galarraga, María Macarena; Cano Moreno, Virginia; Lago Cruz, Beatriz; Encinas, María Teresa; Gonzalez Bulnes, Antonio; et al.; The use of hcg for inducing ovulation in sheep estrus synchronization impairs ovulatory follicle growth and fertility; Multidisciplinary Digital Publishing Institute; Animals; 11; 4; 4-2021; 1-8
2076-2615
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3390/ani11040984
info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2076-2615/11/4/984
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846083249897472000
score 13.22299

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