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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
21/02/2014 |
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Actualizado : |
27/06/2018 |
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Tipo de producción científica : |
Actividades de Difusión |
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Autor : |
INIA LA ESTANZUELA; PROGRAMA NACIONAL PRODUCCIÓN DE LECHE; PROGRAMA NACIONAL PASTURAS Y FORRAJES; PROGRAMA NACIONAL CULTIVOS DE SECANO; PROGRAMA NACIONAL PRODUCCIÓN DE CARNE Y LANA |
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Afiliación : |
ESTACIÓN EXPERIMENTAL "DR. ALBERTO BOERGER", INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PROGRAMA NACIONAL DE INVESTIGACIÓN PRODUCCIÓN DE LECHE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PROGRAMA NACIONAL DE INVESTIGACIÓN PASTURAS Y FORRAJES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PROGRAMA NACIONAL DE INVESTIGACIÓN CULTIVOS DE SECANO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PROGRAMA NACIONAL DE INVESTIGACIÓN PRODUCCIÓN DE CARNE Y LANA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Día de Campo: manejo de estrés térmico en ganado lechero. |
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Fecha de publicación : |
2014 |
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Fuente / Imprenta : |
La Estanzuela, UY: INIA, 2014. |
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Páginas : |
31 p. |
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Serie : |
(Serie Actividades de Difusión; 728). |
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ISSN : |
1688-9258 |
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Idioma : |
Español |
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Thesagro : |
GANADO LECHERO. |
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Asunto categoría : |
-- |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/10545/1/sad-728.pdf
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Marc : |
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022 $a1688-9258
100 1 $aINIA LA ESTANZUELA
245 $aDía de Campo$bmanejo de estrés térmico en ganado lechero.$h[electronic resource]
260 $aLa Estanzuela, UY: INIA$c2014
300 $a31 p.
490 $a(Serie Actividades de Difusión; 728).
650 $aGANADO LECHERO
700 1 $aPROGRAMA NACIONAL PRODUCCIÓN DE LECHE
700 1 $aPROGRAMA NACIONAL PASTURAS Y FORRAJES
700 1 $aPROGRAMA NACIONAL CULTIVOS DE SECANO
700 1 $aPROGRAMA NACIONAL PRODUCCIÓN DE CARNE Y LANA
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INIA La Estanzuela (LE) |
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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 actual : |
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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Circulación / Nivel : |
A - 1 |
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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
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008 2011 bl uuuu u00u1 u #d
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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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