Efficiency of Artificial Insemination at Natural Estrus in Organic Churra Ewes

[EN] Hormonal treatments used to synchronize estrus in sheep artificial insemination procedures can cause several physiological problems that can affect negatively fertility and animal health; however, alternative protocols based on the detection of natural estrus offer a more sustainable option whi...

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Autores: De la Fuente, Luis F., Palacios Riocerezo, Carlos, Abecia, José-Alfonso, Plaza Martín, Javier, Hidalgo, Cristina
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/167752
Acceso en línea:http://hdl.handle.net/10366/167752
Access Level:acceso abierto
Palabra clave:Artificial insemination
Sheep
Natural estrus
Fertility
Organic farming
Inseminación artificial
Ovejas
Estro natural
Fertilidad
Agricultura ecológica
5102.11 Ganadería
3104.07 Ovinos
3104.11 Reproducción
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spelling Efficiency of Artificial Insemination at Natural Estrus in Organic Churra EwesDe la Fuente, Luis F.Palacios Riocerezo, CarlosAbecia, José-AlfonsoPlaza Martín, JavierHidalgo, CristinaArtificial inseminationSheepNatural estrusFertilityOrganic farmingInseminación artificialOvejasEstro naturalFertilidadAgricultura ecológica5102.11 Ganadería3104.07 Ovinos3104.11 Reproducción[EN] Hormonal treatments used to synchronize estrus in sheep artificial insemination procedures can cause several physiological problems that can affect negatively fertility and animal health; however, alternative protocols based on the detection of natural estrus offer a more sustainable option while reaching successful fertility results. Therefore, in this study, an artificial insemination protocol at natural estrus in organic Churra sheep was performed. In the protocol design phase, 125 ewes were exocervically inseminated, and their fertility was assessed based on the number of inseminations, physiological state, body condition, estrus detection–insemination interval and vaginal fluids in cervix. That protocol was repeated in six consecutive years. In all ewes, fertilities based on the timing of insemination after estrus detection were very high. Lactating ewes produced better results than did dry ewes, which was probably because of the better feeding of the former. In addition, double insemination increased the fertility of ewes, whose estrus was detected within 16 h of onset. Body condition and amount of vaginal fluid were correlated with fertility. In conclusion, exocervical inseminations at natural estrus can produce acceptable fertility and prolificity in Churra ewes, avoiding physiological problems derived from the use of hormonal treatments.[ES] Los tratamientos hormonales utilizados para sincronizar el estro en la inseminación artificial de ovejas pueden causar diversos problemas fisiológicos que afectan negativamente la fertilidad y la salud animal. Sin embargo, los protocolos alternativos basados ​​en la detección del estro natural ofrecen una opción más sostenible para lograr resultados de fertilidad satisfactorios. Por lo tanto, en este estudio se implementó un protocolo de inseminación artificial durante el estro natural en ovejas Churra orgánicas . En la fase de diseño del protocolo, se inseminaron exocervicalmente 125 ovejas y se evaluó su fertilidad en función del número de inseminaciones, el estado fisiológico, la condición corporal, el intervalo entre la detección del estro y la inseminación, y la cantidad de fluido vaginal en el cérvix. Este protocolo se repitió durante seis años consecutivos. En todas las ovejas, la fertilidad, basada en el momento de la inseminación tras la detección del estro, fue muy alta. Las ovejas lactantes obtuvieron mejores resultados que las secas, probablemente debido a una mejor alimentación. Además, la doble inseminación incrementó la fertilidad de las ovejas cuyo estro se detectó dentro de las 16 horas posteriores a su inicio. La condición corporal y la cantidad de fluido vaginal se correlacionaron con la fertilidad. En conclusión, las inseminaciones exocervicales en estro natural pueden producir una fertilidad y prolificidad aceptables en ovejas Churra , evitando problemas fisiológicos derivados del uso de tratamientos hormonales.MDPI202520252022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10366/167752reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésMinisterio de Ciencia e Innovación Proyectos Torres Quevedo, number PTQ-09-02-01982Atribución 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1677522026-06-07T06:28:51Z
dc.title.none.fl_str_mv Efficiency of Artificial Insemination at Natural Estrus in Organic Churra Ewes
title Efficiency of Artificial Insemination at Natural Estrus in Organic Churra Ewes
spellingShingle Efficiency of Artificial Insemination at Natural Estrus in Organic Churra Ewes
De la Fuente, Luis F.
Artificial insemination
Sheep
Natural estrus
Fertility
Organic farming
Inseminación artificial
Ovejas
Estro natural
Fertilidad
Agricultura ecológica
5102.11 Ganadería
3104.07 Ovinos
3104.11 Reproducción
title_short Efficiency of Artificial Insemination at Natural Estrus in Organic Churra Ewes
title_full Efficiency of Artificial Insemination at Natural Estrus in Organic Churra Ewes
title_fullStr Efficiency of Artificial Insemination at Natural Estrus in Organic Churra Ewes
title_full_unstemmed Efficiency of Artificial Insemination at Natural Estrus in Organic Churra Ewes
title_sort Efficiency of Artificial Insemination at Natural Estrus in Organic Churra Ewes
dc.creator.none.fl_str_mv De la Fuente, Luis F.
Palacios Riocerezo, Carlos
Abecia, José-Alfonso
Plaza Martín, Javier
Hidalgo, Cristina
author De la Fuente, Luis F.
author_facet De la Fuente, Luis F.
Palacios Riocerezo, Carlos
Abecia, José-Alfonso
Plaza Martín, Javier
Hidalgo, Cristina
author_role author
author2 Palacios Riocerezo, Carlos
Abecia, José-Alfonso
Plaza Martín, Javier
Hidalgo, Cristina
author2_role author
author
author
author
dc.subject.none.fl_str_mv Artificial insemination
Sheep
Natural estrus
Fertility
Organic farming
Inseminación artificial
Ovejas
Estro natural
Fertilidad
Agricultura ecológica
5102.11 Ganadería
3104.07 Ovinos
3104.11 Reproducción
topic Artificial insemination
Sheep
Natural estrus
Fertility
Organic farming
Inseminación artificial
Ovejas
Estro natural
Fertilidad
Agricultura ecológica
5102.11 Ganadería
3104.07 Ovinos
3104.11 Reproducción
description [EN] Hormonal treatments used to synchronize estrus in sheep artificial insemination procedures can cause several physiological problems that can affect negatively fertility and animal health; however, alternative protocols based on the detection of natural estrus offer a more sustainable option while reaching successful fertility results. Therefore, in this study, an artificial insemination protocol at natural estrus in organic Churra sheep was performed. In the protocol design phase, 125 ewes were exocervically inseminated, and their fertility was assessed based on the number of inseminations, physiological state, body condition, estrus detection–insemination interval and vaginal fluids in cervix. That protocol was repeated in six consecutive years. In all ewes, fertilities based on the timing of insemination after estrus detection were very high. Lactating ewes produced better results than did dry ewes, which was probably because of the better feeding of the former. In addition, double insemination increased the fertility of ewes, whose estrus was detected within 16 h of onset. Body condition and amount of vaginal fluid were correlated with fertility. In conclusion, exocervical inseminations at natural estrus can produce acceptable fertility and prolificity in Churra ewes, avoiding physiological problems derived from the use of hormonal treatments.
publishDate 2022
dc.date.none.fl_str_mv 2022
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10366/167752
url http://hdl.handle.net/10366/167752
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Ministerio de Ciencia e Innovación Proyectos Torres Quevedo, number PTQ-09-02-01982
dc.rights.none.fl_str_mv Atribución 4.0 Internacional
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución 4.0 Internacional
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname:Universidad de Salamanca (USAL)
instname_str Universidad de Salamanca (USAL)
reponame_str GREDOS. Repositorio Institucional de la Universidad de Salamanca
collection GREDOS. Repositorio Institucional de la Universidad de Salamanca
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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