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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 La Estanzuela; INIA Las Brujas. |
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Fecha : |
21/02/2014 |
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Actualizado : |
14/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
FIERRO, S.; OLIVERA-MUZANTEA, J.; GIL, J.; VIÑOLES, C. |
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Afiliación : |
CAROLINA VIÑOLES GIL, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Effects of prostaglandin administration on ovarian follicular dynamics, conception, prolificacy, and fecundity in sheep. |
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Fecha de publicación : |
2011 |
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Fuente / Imprenta : |
Theriogenology, 2011, v.76, no.4, p.630-639. |
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ISSN : |
0093-691X |
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DOI : |
10.1016/j.theriogenology.2011.03.016 |
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Idioma : |
Español
Inglés |
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Notas : |
Article history: Received 23 August 2010 / Received in revised form 17 March 201 / Accepted 18 March 2011. |
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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 |
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Palabras claves : |
PÉRDIDA DE EMBRIONES. |
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Thesagro : |
COMPORTAMIENTO REPRODUCTIVO; INSEMINACIÓN EN OVINOS; OVINOS. |
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Asunto categoría : |
--
L53 Fisiología Animal - Reproducción |
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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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| 1. |  | KIEDANSKI, D.; KOFMAN, D.; ORDA, A.; HORTA, J.; OTERO, A. Exploiting flexibility in irrigation while maintaining optimal crop productivity. (Conference paper) IEEE International Conference on Communications, Control and Computing Technologies for Smart Grids. Beijing, China, 21-23 October 2019. Smart Grid Comm 2019, Oct 2019, Beijing, China. hal-02160861f. Doi: 10.1109/SmartGridComm.2019.8909717 Article history: Submitted on 20 Jun 2019 / Last modification on 17 October 2019.
Contributor : Diego Kiedanski (Telecom Paristech, France).| Tipo: Trabajos en Congresos/Conferencias |
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