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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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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; INIA Treinta y Tres. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
15/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Agropecuarias |
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Autor : |
PEREIRA, A.; PIMIENTA, A.; OXLEY, M.; MARTINEZ, S. |
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Afiliación : |
ANA LAURA PEREIRA AMATO, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; ARIEL REINALDO PIMIENTA MEDERIOS, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; MABEL TERESA OXLEY MURAÑA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; SEBASTIAN MARTINEZ KOPP, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Control químico de roya en semilleros de Lotus Subbiflorus. |
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Fecha de publicación : |
2013 |
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Fuente / Imprenta : |
Revista INIA Uruguay; 2013, no. 34, p. 30-33., 2013 |
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ISSN : |
1510-9011 |
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Idioma : |
Español |
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Thesagro : |
ESCARDA; FUNGICIDAS; LOTUS SUBBIFLORUS; PRODUCCION DE SEMILLA; URUGUAY. |
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Asunto categoría : |
F62 Fisiología de la planta - Crecimiento y desarrollo
H60 Malezas y escardas |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/2227/1/14445191113140545.pdf
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Marc : |
LEADER 00573naa a2200217 a 4500
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008 2013 bl uuuu u00u1 u #d
022 $a1510-9011
100 1 $aPEREIRA, A.
245 $aControl químico de roya en semilleros de Lotus Subbiflorus.
260 $c2013
650 $aESCARDA
650 $aFUNGICIDAS
650 $aLOTUS SUBBIFLORUS
650 $aPRODUCCION DE SEMILLA
650 $aURUGUAY
700 1 $aPIMIENTA, A.
700 1 $aOXLEY, M.
700 1 $aMARTINEZ, S.
773 $tRevista INIA Uruguay; 2013, no. 34, p. 30-33., 2013
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INIA Tacuarembó (TBO) |
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