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| Registros recuperados : 165 | |
| 41. |  | FUREST, J.M. Información agroclimática. In: INIA Las Brujas, Programa Nacional Producción Hortìcola. Resultados experimentales en boniato. Reunión técnica. Canelones (Uruguay): INIA, 1997. p. 36-39 (INIA Serie Actividades de Difusión; 144)| Biblioteca(s): INIA Las Brujas. |
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| 46. | | Carnelli, J.P.Furest, J.M.Picos, C.Richard, M. Información agroclimática para la producción de cultivos hortícolas: experiencias en INIA Tacuarembó, Las Brujas y Salto Grande ln: Seminario Cultivos Protegidos y Hortalizas de Hoja, 1995, Rivera, Uruguay Trabajos presentados. Las Brujas, Canelones (Uruguay): INIA, 1995. p. 32-78 (INIA Serie Actividades de Difusión ; 69) "JUNAGRA; PNUD; INIA"| Biblioteca(s): INIA La Estanzuela; INIA Las Brujas; INIA Tacuarembó. |
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| 47. | | MÉNDEZ, R.; ROEL, A.; FUREST, J.M. Información climática. Agroclimatología. ln: INIA TREINTA Y TRES. Arroz: resultados experimentales 2003-2004. Treinta y Tres (Uruguay): INIA, 2004. cap. 1, p. 1-2. (INIA Serie Actividades de Difusión; 373)| Biblioteca(s): INIA Treinta y Tres. |
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| 51. | | ROEL, A.; MÉNDEZ, R.; FUREST, J.M. Información climática. Agroclimatología. ln: INIA TREINTA Y TRES. Arroz. Resultados Experimentales 2004-2005. Treinta y Tres (Uruguay): INIA, 2005. Cap. 1, p. 1-2. (INIA Serie Actividades de Difusión; 418)| Biblioteca(s): INIA Treinta y Tres. |
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| Registros recuperados : 165 | |
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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 actual : |
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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Circulación / Nivel : |
A - 2 |
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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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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
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650 $aOVINOS
650 $aPROSTAGLANDINAS
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700 1 $aOLIVERA-MUZANTE, J.
773 $tTheriogenology, 2013$gv. 79, no.3, p. 399?408.
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