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Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas. |
Fecha : |
21/02/2014 |
Actualizado : |
14/10/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
FIERRO, S.; OLIVERA-MUZANTEA, J.; GIL, J.; VIÑOLES, C. |
Afiliación : |
CAROLINA VIÑOLES GIL, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
Título : |
Effects of prostaglandin administration on ovarian follicular dynamics, conception, prolificacy, and fecundity in sheep. |
Fecha de publicación : |
2011 |
Fuente / Imprenta : |
Theriogenology, 2011, v.76, no.4, p.630-639. |
ISSN : |
0093-691X |
DOI : |
10.1016/j.theriogenology.2011.03.016 |
Idioma : |
Español Inglés |
Notas : |
Article history: Received 23 August 2010 / Received in revised form 17 March 201 / Accepted 18 March 2011. |
Contenido : |
ABSTRACT.
Two experiments were conducted to determine the effects of prostaglandin administration on ovarian follicular dynamics, conception, prolificacy, and fecundity in sheep. During the breeding season, multiparous Corriedale ewes were randomly allocated to two groups: 1) PG group (n = 15 and n = 135 in Experiments I and II, respectively): synchronized with two injections of DL-Cloprostenol (125 μg) given 7 d apart, and inseminated at a fixed time (Day 0), 48 h after the second injection; and 2) Control group (n = 15 and n = 73 in Experiments I and II): ewes in spontaneous estrus inseminated at detected estrus. Ewes received 100 10 6 sperm by intrauterine AI. Ultrasonography was used to evaluate growth of the ovulatory follicle, ovulation rate (OR), conception rate, and prolificacy on Days 30 and 60. Ewes from the group PG had a larger (4.8 0.5 mm, mean SEM; P < 0.05) ovulatory follicle that grew faster (1.2 0.3 mm/d, P = 0.08), and a lower OR (1.37 0.1, P < 0.05), compared to ewes from the Control group (3.9 0.2 mm, 0.7 0.2 mm/d, and 1.61 0.1 respectively). Plasma progesterone concentrations from Days -6 to 1 were lower in the PG group (P < 0.05), but plasma estradiol concentrations were similar between groups (P > 0.05). Progesterone concentrations were similar between groups during the early luteal phase and on Days 12 and 17 (P > 0.05). The embryo recovery rate (Day 7) tended to be lower in the PG group (39 vs 64%, P = 0.08), but embryo quality did not differ between groups. Conception, prolificacy and fecundity, were lower in the PG than in the Control group (P < 0.05). Cumulative reproductive losses were similar between groups, but more twins were lost in the PG group (P < 0.05). We concluded that in ewes synchronized with PGF 2α given twice, 7 d apart, lower reproductive performance was associated with an environment dominated by lower progesterone concentrations that stimulated the preovulatory follicle to grow faster and become larger; this was associated with lower rates of ovulation, conception, prolificacy, and fecundity.
© 2011 Elsevier Inc. MenosABSTRACT.
Two experiments were conducted to determine the effects of prostaglandin administration on ovarian follicular dynamics, conception, prolificacy, and fecundity in sheep. During the breeding season, multiparous Corriedale ewes were randomly allocated to two groups: 1) PG group (n = 15 and n = 135 in Experiments I and II, respectively): synchronized with two injections of DL-Cloprostenol (125 μg) given 7 d apart, and inseminated at a fixed time (Day 0), 48 h after the second injection; and 2) Control group (n = 15 and n = 73 in Experiments I and II): ewes in spontaneous estrus inseminated at detected estrus. Ewes received 100 10 6 sperm by intrauterine AI. Ultrasonography was used to evaluate growth of the ovulatory follicle, ovulation rate (OR), conception rate, and prolificacy on Days 30 and 60. Ewes from the group PG had a larger (4.8 0.5 mm, mean SEM; P < 0.05) ovulatory follicle that grew faster (1.2 0.3 mm/d, P = 0.08), and a lower OR (1.37 0.1, P < 0.05), compared to ewes from the Control group (3.9 0.2 mm, 0.7 0.2 mm/d, and 1.61 0.1 respectively). Plasma progesterone concentrations from Days -6 to 1 were lower in the PG group (P < 0.05), but plasma estradiol concentrations were similar between groups (P > 0.05). Progesterone concentrations were similar between groups during the early luteal phase and on Days 12 and 17 (P > 0.05). The embryo recovery rate (Day 7) tended to be lower in the PG group (39 vs 64%, P = 0.08), but embryo quality d... Presentar Todo |
Palabras claves : |
PÉRDIDA DE EMBRIONES. |
Thesagro : |
COMPORTAMIENTO REPRODUCTIVO; INSEMINACIÓN EN OVINOS; OVINOS. |
Asunto categoría : |
-- L53 Fisiología Animal - Reproducción |
Marc : |
LEADER 02955naa a2200241 a 4500 001 1012822 005 2019-10-14 008 2011 bl uuuu u00u1 u #d 022 $a0093-691X 024 7 $a10.1016/j.theriogenology.2011.03.016$2DOI 100 1 $aFIERRO, S. 245 $aEffects of prostaglandin administration on ovarian follicular dynamics, conception, prolificacy, and fecundity in sheep. 260 $c2011 500 $aArticle history: Received 23 August 2010 / Received in revised form 17 March 201 / Accepted 18 March 2011. 520 $aABSTRACT. Two experiments were conducted to determine the effects of prostaglandin administration on ovarian follicular dynamics, conception, prolificacy, and fecundity in sheep. During the breeding season, multiparous Corriedale ewes were randomly allocated to two groups: 1) PG group (n = 15 and n = 135 in Experiments I and II, respectively): synchronized with two injections of DL-Cloprostenol (125 μg) given 7 d apart, and inseminated at a fixed time (Day 0), 48 h after the second injection; and 2) Control group (n = 15 and n = 73 in Experiments I and II): ewes in spontaneous estrus inseminated at detected estrus. Ewes received 100 10 6 sperm by intrauterine AI. Ultrasonography was used to evaluate growth of the ovulatory follicle, ovulation rate (OR), conception rate, and prolificacy on Days 30 and 60. Ewes from the group PG had a larger (4.8 0.5 mm, mean SEM; P < 0.05) ovulatory follicle that grew faster (1.2 0.3 mm/d, P = 0.08), and a lower OR (1.37 0.1, P < 0.05), compared to ewes from the Control group (3.9 0.2 mm, 0.7 0.2 mm/d, and 1.61 0.1 respectively). Plasma progesterone concentrations from Days -6 to 1 were lower in the PG group (P < 0.05), but plasma estradiol concentrations were similar between groups (P > 0.05). Progesterone concentrations were similar between groups during the early luteal phase and on Days 12 and 17 (P > 0.05). The embryo recovery rate (Day 7) tended to be lower in the PG group (39 vs 64%, P = 0.08), but embryo quality did not differ between groups. Conception, prolificacy and fecundity, were lower in the PG than in the Control group (P < 0.05). Cumulative reproductive losses were similar between groups, but more twins were lost in the PG group (P < 0.05). We concluded that in ewes synchronized with PGF 2α given twice, 7 d apart, lower reproductive performance was associated with an environment dominated by lower progesterone concentrations that stimulated the preovulatory follicle to grow faster and become larger; this was associated with lower rates of ovulation, conception, prolificacy, and fecundity. © 2011 Elsevier Inc. 650 $aCOMPORTAMIENTO REPRODUCTIVO 650 $aINSEMINACIÓN EN OVINOS 650 $aOVINOS 653 $aPÉRDIDA DE EMBRIONES 700 1 $aOLIVERA-MUZANTEA, J. 700 1 $aGIL, J. 700 1 $aVIÑOLES, C. 773 $tTheriogenology, 2011$gv.76, no.4, p.630-639.
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INIA Las Brujas (LB) |
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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha actual : |
21/02/2014 |
Actualizado : |
27/06/2019 |
Tipo de producción científica : |
Actividades de Difusión |
Autor : |
INIA TACUAREMBÓ; PROGRAMA NACIONAL PRODUCCIÓN FORESTAL |
Afiliación : |
ESTACIÓN EXPERIMENTAL DEL NORTE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PROGRAMA NACIONAL DE INVESTIGACIÓN PRODUCCIÓN FORESTAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
DÍA DE CAMPO FORESTAL EN LA REGIÓN SURESTE. |
Complemento del título : |
Predios de las Empresas EUFORES y Grupo Forestal, Lavalleja, Maldonado, 12 de setiembre, 2006. |
Fecha de publicación : |
2006 |
Fuente / Imprenta : |
Tacuarembó (Uruguay): INIA, 2006. |
Páginas : |
36 p. |
Serie : |
(INIA Serie Actividades de Difusión ; 462) |
Idioma : |
Español |
Notas : |
Programa Forestal: Gustavo Balmelli, Fernando Resquín, Nora Altier, Virginia Marroni. |
Contenido : |
EVALUACIÓN SANITARIA, PRODUCTIVA Y DE PROPIEDADES DE LA MADERA DE DIFERENTES ORÍGENES DE Eucalyptus globulus A LOS 11 AÑOS. EVALUACIÓN DE FUENTES DE SEMILLA DE Eucalyptus maidenii. EFECTO DE LOS DAÑOS PROVOCADOS POR ENFERMEDADES FOLIARES Y POR HELADAS EN Eucalyptus globulus SOBRE EL CRECIMIENTO POSTERIOR. ACTIVIDADES EN EL ÁREA DE FERTILIDAD DE SUELOS. IMPORTANCIA DE LA FUENTE DE SEMILLA EN Eucalyptus globulus. EVALUACIÓN ECONÓMICA EN UNA PLANTACIÓN COMERCIAL CON SEMILLA DE CHILE Y AUSTRALIA. COMPORTAMIENTO RELATIVO DE LA SEMILLA DE Eucalyptus globulus PRODUCIDA POR INIA. |
Palabras claves : |
FOREST AND FORESTRY. |
Thesagro : |
EUCALYPTUS GLOBULUS; FORESTACION; URUGUAY. |
Asunto categoría : |
K10 Producción forestal |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/9353/1/111219220807114823.pdf
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Marc : |
LEADER 01235nam a2200205 a 4500 001 1023236 005 2019-06-27 008 2006 bl uuuu u00u1 u #d 100 1 $aINIA TACUAREMBÓ 245 $aDÍA DE CAMPO FORESTAL EN LA REGIÓN SURESTE. 260 $aTacuarembó (Uruguay): INIA$c2006 300 $a36 p. 490 $a(INIA Serie Actividades de Difusión ; 462) 500 $aPrograma Forestal: Gustavo Balmelli, Fernando Resquín, Nora Altier, Virginia Marroni. 520 $aEVALUACIÓN SANITARIA, PRODUCTIVA Y DE PROPIEDADES DE LA MADERA DE DIFERENTES ORÍGENES DE Eucalyptus globulus A LOS 11 AÑOS. EVALUACIÓN DE FUENTES DE SEMILLA DE Eucalyptus maidenii. EFECTO DE LOS DAÑOS PROVOCADOS POR ENFERMEDADES FOLIARES Y POR HELADAS EN Eucalyptus globulus SOBRE EL CRECIMIENTO POSTERIOR. ACTIVIDADES EN EL ÁREA DE FERTILIDAD DE SUELOS. IMPORTANCIA DE LA FUENTE DE SEMILLA EN Eucalyptus globulus. EVALUACIÓN ECONÓMICA EN UNA PLANTACIÓN COMERCIAL CON SEMILLA DE CHILE Y AUSTRALIA. COMPORTAMIENTO RELATIVO DE LA SEMILLA DE Eucalyptus globulus PRODUCIDA POR INIA. 650 $aEUCALYPTUS GLOBULUS 650 $aFORESTACION 650 $aURUGUAY 653 $aFOREST AND FORESTRY 700 1 $aPROGRAMA NACIONAL PRODUCCIÓN FORESTAL
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