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| Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
Registro completo
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Biblioteca (s) : |
INIA Las Brujas; INIA Tacuarembó. |
Fecha : |
08/09/2014 |
Actualizado : |
16/11/2015 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
FIERRO, S.; GIL, J.; VIÑOLES, C.; OLIVERA-MUZANTE, J. |
Afiliación : |
CAROLINA VIÑOLES GIL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
The use of prostaglandins in controlling estrous cycle of the ewe: A review. |
Fecha de publicación : |
2013 |
Fuente / Imprenta : |
Theriogenology, 2013, v. 79, no.3, p. 399?408. |
ISSN : |
0093-691X |
DOI : |
10.1016/j.theriogenology.2012.10.022 |
Idioma : |
Inglés |
Contenido : |
ABSTRACT.
This review considers the use of prostaglandin F2a and its synthetic analogues (PG) for controlling the estrous cycle of the ewe. Aspects such as phase of the estrus cycle, PG
analogues, PG doses, ovarian follicle development pattern, CL formation, progesterone synthesis, ovulation rate, sperm transport, embryo quality, and fertility rates after PG
administration are reviewed. Furthermore, protocols for estrus synchronization and their success in timed AI programs are discussed. Based on available information, the ovine CL is refractory to PG treatment for up to 2 days after ovulation. All PG analogues are effective when an appropriate dose is given; in that regard, there is a positive association between the dose administered and the proportion of ewes detected in estrus. Follicular response after PG is dependent on the phase of the estrous cycle at treatment. Altered sperm transport and low pregnancy rates are generally reported. However, reports on alteration of the steroidogenic capacity of preovulatory follicles, ovulation rate, embryo quality, recovery rates, and prolificacy, are controversial. Although various PG-based protocols can be used for estrus synchronization, a second PG injection improves estrus response when the stage of the estrous cycle at the first injection is unknown. The estrus cycle after PG administration has a normal length. Prostaglandin-based protocols for timed AI achieved poor reproductive outcomes, but increasing the interval between PG injections might increase pregnancy rates. Attempts to improve reproductive outcomes have been directed to provide a synchronized LH surge: use of different routes of AI (cervical or intrauterine), different PG doses, and increased intervals between PG injections. Finally we present our point of view regarding future perspectives on the use of PG in programs of controlled sheep reproduction.
@ 2013 Elsevier Inc. All rights reserved MenosABSTRACT.
This review considers the use of prostaglandin F2a and its synthetic analogues (PG) for controlling the estrous cycle of the ewe. Aspects such as phase of the estrus cycle, PG
analogues, PG doses, ovarian follicle development pattern, CL formation, progesterone synthesis, ovulation rate, sperm transport, embryo quality, and fertility rates after PG
administration are reviewed. Furthermore, protocols for estrus synchronization and their success in timed AI programs are discussed. Based on available information, the ovine CL is refractory to PG treatment for up to 2 days after ovulation. All PG analogues are effective when an appropriate dose is given; in that regard, there is a positive association between the dose administered and the proportion of ewes detected in estrus. Follicular response after PG is dependent on the phase of the estrous cycle at treatment. Altered sperm transport and low pregnancy rates are generally reported. However, reports on alteration of the steroidogenic capacity of preovulatory follicles, ovulation rate, embryo quality, recovery rates, and prolificacy, are controversial. Although various PG-based protocols can be used for estrus synchronization, a second PG injection improves estrus response when the stage of the estrous cycle at the first injection is unknown. The estrus cycle after PG administration has a normal length. Prostaglandin-based protocols for timed AI achieved poor reproductive outcomes, but increasing the interval betwee... Presentar Todo |
Thesagro : |
FERTILIDAD; OVEJAS; OVINOS; PROSTAGLANDINAS. |
Asunto categoría : |
-- |
Marc : |
LEADER 02561naa a2200229 a 4500 001 1053921 005 2015-11-16 008 2013 bl uuuu u00u1 u #d 022 $a0093-691X 024 7 $a10.1016/j.theriogenology.2012.10.022$2DOI 100 1 $aFIERRO, S. 245 $aThe use of prostaglandins in controlling estrous cycle of the ewe$bA review. 260 $c2013 520 $aABSTRACT. This review considers the use of prostaglandin F2a and its synthetic analogues (PG) for controlling the estrous cycle of the ewe. Aspects such as phase of the estrus cycle, PG analogues, PG doses, ovarian follicle development pattern, CL formation, progesterone synthesis, ovulation rate, sperm transport, embryo quality, and fertility rates after PG administration are reviewed. Furthermore, protocols for estrus synchronization and their success in timed AI programs are discussed. Based on available information, the ovine CL is refractory to PG treatment for up to 2 days after ovulation. All PG analogues are effective when an appropriate dose is given; in that regard, there is a positive association between the dose administered and the proportion of ewes detected in estrus. Follicular response after PG is dependent on the phase of the estrous cycle at treatment. Altered sperm transport and low pregnancy rates are generally reported. However, reports on alteration of the steroidogenic capacity of preovulatory follicles, ovulation rate, embryo quality, recovery rates, and prolificacy, are controversial. Although various PG-based protocols can be used for estrus synchronization, a second PG injection improves estrus response when the stage of the estrous cycle at the first injection is unknown. The estrus cycle after PG administration has a normal length. Prostaglandin-based protocols for timed AI achieved poor reproductive outcomes, but increasing the interval between PG injections might increase pregnancy rates. Attempts to improve reproductive outcomes have been directed to provide a synchronized LH surge: use of different routes of AI (cervical or intrauterine), different PG doses, and increased intervals between PG injections. Finally we present our point of view regarding future perspectives on the use of PG in programs of controlled sheep reproduction. @ 2013 Elsevier Inc. All rights reserved 650 $aFERTILIDAD 650 $aOVEJAS 650 $aOVINOS 650 $aPROSTAGLANDINAS 700 1 $aGIL, J. 700 1 $aVIÑOLES, C. 700 1 $aOLIVERA-MUZANTE, J. 773 $tTheriogenology, 2013$gv. 79, no.3, p. 399?408.
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61. | | VIÑOLES, C.; SOSA, C.; MEIKLE, A.; ABECIA, J.-A. Embryo losses during nutritional treatments in animal models: lessons for humans embryo losses and nutrition in Mammals. In: Watson, R.R. (Ed.), 2015, Handbook of Fertility: Nutrition, Diet, Lifestyle and Reproductive Health. Elsevier, p.99-105 (Chap. 9). 99-105Tipo: Capítulo en Libro Técnico-Científico |
Biblioteca(s): INIA Las Brujas. |
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72. | | SANTA CRUZ TORRES, R.; CUSHMAN, R.; VIÑOLES, C. Reserva folicular y pubertad. El recuento de folículos antrales es una herramienta que permitiría seleccionar terneras más precoces al destete. In: VIÑOLES, C.; SANTA CRUZ TORRES, R. (Eds.). Recuento de folículos antrales y concentraciones de hormona anti-Mülleriana: dos potenciales herramientas de selección de reemplazos //Antral follicle count and anti-Müllerian hormone concentrations: two potential replacement selection tools. Montevideo (UY): INIA, 2019. p. 19-35 (INIA Serie Técnica; 249) Trabajo publicado en la revista Theriogenology: Santa Cruz, R., Cushman, R.A., Vinoles, C., 2018. Antral follicular count is a tool that may allow the selection of more precocious Bradford heifers at weaning. Theriogenology 119,...Tipo: Capítulo en Libro Técnico-Científico |
Biblioteca(s): INIA Tacuarembó. |
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73. | | ALVEZ, A.; GUILLEN, S.; SEQUEIRA, M.; MEIKLE, A.; VIÑOLES, C. Sub-fertility in beef cattle: follicle dynamics and progesterone concentration during the estrus cycle. [Resumen de poster]. ln: Encuentro de Investigadores de la Región Noreste: Cerro Largo-Rivera-Tacuarembó, 1., 12 de agosto de 2016, Campus Interinstitucional de Tacuarembó, Tacuarembó. Libro de Resúmenes. Tacuarembó: UDELAR; INIA, 2016. p. 44 Modalidad: poster.Tipo: Abstracts/Resúmenes |
Biblioteca(s): INIA Tacuarembó. |
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74. | | ALVEZ, A.; GUILLEN, S.; SEQUEIRA, M.; MEIKLE, A.; VIÑOLES, C. Sub-fertility in beef cattle: follicle dynamics and progesterone concentrations during the estrus cycle In: Juengel, J.L.; Miyamoto, A.; Price, C.; Reynolds, L.P.; Smith, M.F.; Webb, R.; eds. Proceedings of the International Symposium on Reproduction in Dometic Ruminants, 9., Obihiro, Hokkaido, Japan, Agosto 2014 621 p.Tipo: Abstracts/Resúmenes |
Biblioteca(s): INIA Tacuarembó. |
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78. | | GONZÁLEZ, X.; ALVEZ, A.; MEIKLE, A.; NICOLINI, P.; ULGUIM, R.; VIÑOLES, C. Análisis morfológico de estructuras ováricas en vacas Hereford fértiles y subfértiles. ln: Encuentro de Investigadores de la Región Noreste: Cerro Largo-Rivera-Tacuarembó, 1., 12 de agosto de 2016, Campus Interinstitucional de Tacuarembó, Tacuarembó. Libro de Resúmenes. Tacuarembó: UDELAR; INIA, 2016. p. 28 Modalidad oral.Tipo: Abstracts/Resúmenes |
Biblioteca(s): INIA Tacuarembó. |
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79. | | CUNHA, F.; CUSHMAN, R.A.; SANTA CRUZ, R.; DE NAVA, G.; VIÑOLES, C. Antral follicular count has limited impact in the selection of more fertile beef heifers. Livestock Science, November 2020, Volume 241, Article number 104230. Doi: https://doi.org/10.1016/j.livsci.2020.104230 Article history: Received 7 April 2020, Revised 20 July 2020, Accepted 25 August 2020, Available online 26 August 2020. Acknowledgments: This work was supported by the project ?Marcadores de Fertilidad para Ganado de Carne? of the...Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
Biblioteca(s): INIA Tacuarembó. |
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80. | | DEL CAMPO, M.; VIÑOLES, C.; SILVA, J.; LISBOA, J.; AMOZA, S.; SOARES DE LIMA, J.M. Bienestar animal: evaluación de estrés en terneros al momento del destete definitivo, con y sin el uso de técnicas de pre-acondicionamiento desde edades tempranas. In: AUPA, Proceedings del VII Congreso Uruguayo de Producción Animal. Sección Una Sola Salud (Single Health Section), 14 y 15 diciembre 2021. Archivos Latinoamericanos de Producción Animal, 29(Supl.1), p.111-113. (Archivos Latinoamericanos de Producción Animal, Vol.29, Supl.1) Corresponding author: M. del Campo, Instituto Nacional de Investigación Agropecuaria (INIA), Tacuarembó, Ruta 5 km 386 (Uruguay), mailto:mdelcampo@inia.org.uyTipo: Trabajos en Congresos/Conferencias |
Biblioteca(s): INIA Las Brujas. |
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Registros recuperados : 154 | |
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