Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAI
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2018 |
| Outros Autores: | , , , , , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Institucional da UFLA |
| Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/34014 |
Resumo: | The aim of this study was to evaluate hCG treatment on ovarian response and on pregnancy rate using a 9-day oestrus synchronization protocol in Santa Ines ewes. On a random oestrus cycle day, ewes received an intravaginal progesterone device (Primer-PR®, Tecnopec, Brazil). Nine days later (Day 9), 30µg of d-cloprostenol (Prolise®, Syntex, Argentina) and 250IU of eCG (Folligon®, Intervet, Brazil) were administered and the progesterone device was removed. This moment, the ewes were randomly assigned on two groups: Control Group and hCG Group. In the hCG Group, the ewes received 500IU of hCG (Vetecor®, Hertape-Calier, Spain) 24h after device removal. In the Control Group, the ewes did not receive any ovulation inductor. Control and hCG Groups ewes were inseminated 60h and 48h after device removal, respectively. There was no difference between the groups regarding the first ovulatory follicle diameter and the second ovulatory follicle. hCG Group ewes had shorter interval between device removal and ovulation (Control: 79.9±15.4h and hCG: 54.7±4.9h; P=0.001) and more synchronized ovulations. However, the treatment with hCG decreased the pregnancy rate after TAI (P=0,009). In conclusion, hCG administration improves ovulatory synchronisation, but causes a decrease in the pregnancy rate. |
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Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAIEmbora induza a ovulação sincronizada, hCG reduz a fertilidade de ovelhas Santa Inês submetidas à IATFProgesteroneFollicleOvulationSynchronizationProgesteronaFolículoOvulaçãoSincronizaçãoThe aim of this study was to evaluate hCG treatment on ovarian response and on pregnancy rate using a 9-day oestrus synchronization protocol in Santa Ines ewes. On a random oestrus cycle day, ewes received an intravaginal progesterone device (Primer-PR®, Tecnopec, Brazil). Nine days later (Day 9), 30µg of d-cloprostenol (Prolise®, Syntex, Argentina) and 250IU of eCG (Folligon®, Intervet, Brazil) were administered and the progesterone device was removed. This moment, the ewes were randomly assigned on two groups: Control Group and hCG Group. In the hCG Group, the ewes received 500IU of hCG (Vetecor®, Hertape-Calier, Spain) 24h after device removal. In the Control Group, the ewes did not receive any ovulation inductor. Control and hCG Groups ewes were inseminated 60h and 48h after device removal, respectively. There was no difference between the groups regarding the first ovulatory follicle diameter and the second ovulatory follicle. hCG Group ewes had shorter interval between device removal and ovulation (Control: 79.9±15.4h and hCG: 54.7±4.9h; P=0.001) and more synchronized ovulations. However, the treatment with hCG decreased the pregnancy rate after TAI (P=0,009). In conclusion, hCG administration improves ovulatory synchronisation, but causes a decrease in the pregnancy rate.Avaliou-se o tratamento com hCG na resposta ovariana e na taxa de prenhez utilizando protocolo de sincronização do estro de nove dias em ovelhas Santa Inês. As ovelhas receberam um dispositivo intravaginal de progesterona em fase aleatória do ciclo (dia zero= D0). No momento da remoção do dispositivo (D9), as fêmeas receberam 30µg de d-cloprostenol (Prolise® , Syntex, Argentina) e 250UI de eCG (Folligon® , Intervet, Brasil). Nesse momento, as ovelhas foram aleatoriamente distribuídas em dois grupos de tratamento: controle sem indução de ovulação e tratamento com 500UI hCG para indução de ovulação. As ovelhas dos grupos controle e hCG foram inseminadas 60h e 48h após a remoção do dispositivo, respectivamente. Não houve diferença entre os grupos para o diâmetro do primeiro e do segundo folículo pré-ovulatório. As avelhas do grupo hCG apresentaram menor intervalo entre a remoção do dispositivo e a ovulação (grupo controle: 79.9±15.4h e grupo hCG: 54.7±4.9h; P=0.001) e maior sincronização das ovulações. No entanto, o tratamento com hCG diminuiu a taxa de prenhez após a IATF (P=0,009). Conclui-se que, apesar de a administração de hCG aumentar a sincronização da ovulação, reduz a taxa de prenhez.Universidade Federal de Minas Gerais, Escola de Veterinária2019-05-07T12:08:50Z2019-05-07T12:08:50Z2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfDIAS, L. M. K. et al. Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAI. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 70, n. 1, p. 122-130, 2018.http://repositorio.ufla.br/jspui/handle/1/34014Arquivo Brasileiro de Medicina Veterinária e Zootecniareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessDias, L. M. K.Sales, J. N. S.Viau, P.Barros, M. B. P.Nicolau, S. S.Simões, L. M. S.Alves, N. G.Alonso, M. A.Valentim, R.Oliveira, C. A.eng2019-05-07T12:08:50Zoai:localhost:1/34014Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2019-05-07T12:08:50Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
| dc.title.none.fl_str_mv |
Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAI Embora induza a ovulação sincronizada, hCG reduz a fertilidade de ovelhas Santa Inês submetidas à IATF |
| title |
Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAI |
| spellingShingle |
Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAI Dias, L. M. K. Progesterone Follicle Ovulation Synchronization Progesterona Folículo Ovulação Sincronização |
| title_short |
Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAI |
| title_full |
Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAI |
| title_fullStr |
Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAI |
| title_full_unstemmed |
Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAI |
| title_sort |
Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAI |
| author |
Dias, L. M. K. |
| author_facet |
Dias, L. M. K. Sales, J. N. S. Viau, P. Barros, M. B. P. Nicolau, S. S. Simões, L. M. S. Alves, N. G. Alonso, M. A. Valentim, R. Oliveira, C. A. |
| author_role |
author |
| author2 |
Sales, J. N. S. Viau, P. Barros, M. B. P. Nicolau, S. S. Simões, L. M. S. Alves, N. G. Alonso, M. A. Valentim, R. Oliveira, C. A. |
| author2_role |
author author author author author author author author author |
| dc.contributor.author.fl_str_mv |
Dias, L. M. K. Sales, J. N. S. Viau, P. Barros, M. B. P. Nicolau, S. S. Simões, L. M. S. Alves, N. G. Alonso, M. A. Valentim, R. Oliveira, C. A. |
| dc.subject.por.fl_str_mv |
Progesterone Follicle Ovulation Synchronization Progesterona Folículo Ovulação Sincronização |
| topic |
Progesterone Follicle Ovulation Synchronization Progesterona Folículo Ovulação Sincronização |
| description |
The aim of this study was to evaluate hCG treatment on ovarian response and on pregnancy rate using a 9-day oestrus synchronization protocol in Santa Ines ewes. On a random oestrus cycle day, ewes received an intravaginal progesterone device (Primer-PR®, Tecnopec, Brazil). Nine days later (Day 9), 30µg of d-cloprostenol (Prolise®, Syntex, Argentina) and 250IU of eCG (Folligon®, Intervet, Brazil) were administered and the progesterone device was removed. This moment, the ewes were randomly assigned on two groups: Control Group and hCG Group. In the hCG Group, the ewes received 500IU of hCG (Vetecor®, Hertape-Calier, Spain) 24h after device removal. In the Control Group, the ewes did not receive any ovulation inductor. Control and hCG Groups ewes were inseminated 60h and 48h after device removal, respectively. There was no difference between the groups regarding the first ovulatory follicle diameter and the second ovulatory follicle. hCG Group ewes had shorter interval between device removal and ovulation (Control: 79.9±15.4h and hCG: 54.7±4.9h; P=0.001) and more synchronized ovulations. However, the treatment with hCG decreased the pregnancy rate after TAI (P=0,009). In conclusion, hCG administration improves ovulatory synchronisation, but causes a decrease in the pregnancy rate. |
| publishDate |
2018 |
| dc.date.none.fl_str_mv |
2018 2019-05-07T12:08:50Z 2019-05-07T12:08:50Z |
| dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
| dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.uri.fl_str_mv |
DIAS, L. M. K. et al. Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAI. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 70, n. 1, p. 122-130, 2018. http://repositorio.ufla.br/jspui/handle/1/34014 |
| identifier_str_mv |
DIAS, L. M. K. et al. Although it induces synchronized ovulation, hCG reduces the fertility of Santa Ines ewes submitted to TAI. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 70, n. 1, p. 122-130, 2018. |
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http://repositorio.ufla.br/jspui/handle/1/34014 |
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eng |
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eng |
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Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
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Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
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openAccess |
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application/pdf |
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Universidade Federal de Minas Gerais, Escola de Veterinária |
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Universidade Federal de Minas Gerais, Escola de Veterinária |
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Arquivo Brasileiro de Medicina Veterinária e Zootecnia reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
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Universidade Federal de Lavras (UFLA) |
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UFLA |
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UFLA |
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Repositório Institucional da UFLA |
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Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
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nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1815439178293313536 |