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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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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha actual : |
14/01/2015 |
Actualizado : |
18/05/2018 |
Tipo de producción científica : |
Documentos |
Autor : |
RAMOS, Z.; MONTOSSI, F.; DE BARBIERI, I. |
Afiliación : |
ZULLY MARGOT RAMOS ALVEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FABIO MARCELO MONTOSSI PORCHILE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LUIS IGNACIO DE BARBIERI ETCHEBERRY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
El CRILU informando a sus miembros (7 de enero). |
Fecha de publicación : |
2014 |
Fuente / Imprenta : |
CRILU, Hoja de Divulgación, 19, 2014. |
Páginas : |
5 p. |
Serie : |
(CRILU HD; 19) |
Idioma : |
Español |
Notas : |
Consorcio Regional de Innovación de Lana Ultrafina (CRILU). |
Contenido : |
La Hoja de Divulgación número 19 tiene como objetivo principal proporcionar información sobre el convenio firmado entre CLU-CRILU-INIA titulado Distribución y Multiplicación de Reproductores del Núcleo Genético Ultrafino de la Unidad Experimental Glencoe del CRILU para favorecer la sostenibilidad de la Producción Familiar Ganadera. |
Thesagro : |
LANAS ULTRAFINAS; OVINOS. |
Asunto categoría : |
L01 Ganadería |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/3958/1/CRILU-HD-19.pdf
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Marc : |
LEADER 00916nam a2200193 a 4500 001 1052032 005 2018-05-18 008 2014 bl uuuu u0uu1 u #d 100 1 $aRAMOS, Z. 245 $aEl CRILU informando a sus miembros (7 de enero).$h[electronic resource] 260 $aCRILU, Hoja de Divulgación, 19$c2014 300 $a5 p. 490 $a(CRILU HD; 19) 500 $aConsorcio Regional de Innovación de Lana Ultrafina (CRILU). 520 $aLa Hoja de Divulgación número 19 tiene como objetivo principal proporcionar información sobre el convenio firmado entre CLU-CRILU-INIA titulado Distribución y Multiplicación de Reproductores del Núcleo Genético Ultrafino de la Unidad Experimental Glencoe del CRILU para favorecer la sostenibilidad de la Producción Familiar Ganadera. 650 $aLANAS ULTRAFINAS 650 $aOVINOS 700 1 $aMONTOSSI, F. 700 1 $aDE BARBIERI, I.
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