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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas; INIA Tacuarembó. |
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Fecha : |
08/09/2014 |
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Actualizado : |
16/11/2015 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
FIERRO, S.; GIL, J.; VIÑOLES, C.; OLIVERA-MUZANTE, J. |
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Afiliación : |
CAROLINA VIÑOLES GIL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
The use of prostaglandins in controlling estrous cycle of the ewe: A review. |
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Fecha de publicación : |
2013 |
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Fuente / Imprenta : |
Theriogenology, 2013, v. 79, no.3, p. 399?408. |
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ISSN : |
0093-691X |
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DOI : |
10.1016/j.theriogenology.2012.10.022 |
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Idioma : |
Inglés |
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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 |
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Thesagro : |
FERTILIDAD; OVEJAS; OVINOS; PROSTAGLANDINAS. |
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Asunto categoría : |
-- |
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Marc : |
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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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Registro original : |
INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
29/08/2018 |
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Autor : |
INIA (INSTITUTO NACIONAL DE INVESTIGACIÓN AGROPECUARIA). |
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Afiliación : |
GUZMÁN BARREIRO. |
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Título : |
Acuerdo entre el INIA y GESTAMP BIOMASS: Hacia la creación de un sistema de manejo forestal con destino a biomasa. |
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Fecha de publicación : |
2014 |
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Fuente / Imprenta : |
El País Agropecuario, 2014, v. 20, no. 232, p. 40. |
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Idioma : |
Español |
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Contenido : |
Un acuerdo para evaluar la creación de un sistema de manejo forestal con destino a biomasa desde los puntos de vista productivo, operativo, ambiental y económico fue firmado por el Instituto Nacional de Investigación Agropecuaria (INIA) y la empresa española Gestamp Biomass. Con ese objetivo, ya se evaluaron tres especies
de eucaliptos -E dunnii, E. grandis y E benthamii-, a dos densidades de plantación: 2.220 y 3.700 plantas/há En todos los casos, los materiales son de semilla.
En este otoño se instalará un ensayo de biomasa en el predio de la Unidad Experimental La Magnolia, perteneciente al INIA. Habrá 12 parcelas, que se formarán con un
número variable de plantas, distribuidas en una superficie de aproximadamente 28 hectáreas. Las evaluaciones se realizarán en las áreas productiva, ambiental y económica, analizándose el costo de operación de la producción de madera con el objetivo de obtener precios operativos extrapolables a un escenario de mercado comercial. |
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Palabras claves : |
GESTAMP BIOMASS. |
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Thesagro : |
INIA. |
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Asunto categoría : |
K10 Producción forestal |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/11158/1/232.pdf
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Marc : |
LEADER 01483naa a2200145 a 4500
001 1028064
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008 2014 bl uuuu u00u1 u #d
100 1 $aINIA (INSTITUTO NACIONAL DE INVESTIGACIÓN AGROPECUARIA).
245 $aAcuerdo entre el INIA y GESTAMP BIOMASS$bHacia la creación de un sistema de manejo forestal con destino a biomasa.
260 $c2014
520 $aUn acuerdo para evaluar la creación de un sistema de manejo forestal con destino a biomasa desde los puntos de vista productivo, operativo, ambiental y económico fue firmado por el Instituto Nacional de Investigación Agropecuaria (INIA) y la empresa española Gestamp Biomass. Con ese objetivo, ya se evaluaron tres especies de eucaliptos -E dunnii, E. grandis y E benthamii-, a dos densidades de plantación: 2.220 y 3.700 plantas/há En todos los casos, los materiales son de semilla. En este otoño se instalará un ensayo de biomasa en el predio de la Unidad Experimental La Magnolia, perteneciente al INIA. Habrá 12 parcelas, que se formarán con un número variable de plantas, distribuidas en una superficie de aproximadamente 28 hectáreas. Las evaluaciones se realizarán en las áreas productiva, ambiental y económica, analizándose el costo de operación de la producción de madera con el objetivo de obtener precios operativos extrapolables a un escenario de mercado comercial.
650 $aINIA
653 $aGESTAMP BIOMASS
773 $tEl País Agropecuario, 2014$gv. 20, no. 232, p. 40.
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INIA Tacuarembó (TBO) |
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