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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha : |
22/09/2016 |
Actualizado : |
22/09/2016 |
Tipo de producción científica : |
Abstracts/Resúmenes |
Autor : |
ALVEZ, A.; GUILLEN, S.; SEQUEIRA, M.; MEIKLE, A.; VIÑOLES, C. |
Afiliación : |
ANDREA LORENA ALVEZ CERIZOLA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SERRANA GUILLEN DUARTE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Universidad de la República (UdelaR)/ Facultad de Veterinaria; Universidad de la República (UdelaR)/ Facultad de Veterinaria; CAROLINA VIÑOLES GIL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Sub-fertility in beef cattle: follicle dynamics and progesterone concentration during the estrus cycle. [Resumen de poster]. |
Fecha de publicación : |
2016 |
Fuente / Imprenta : |
ln: Encuentro de Investigadores de la Región Noreste: Cerro Largo-Rivera-Tacuarembó, 1., 12 de agosto de 2016, Campus Interinstitucional de Tacuarembó, Tacuarembó. Libro de Resúmenes. Tacuarembó: UDELAR; INIA, 2016. |
Páginas : |
p. 44 |
Idioma : |
Español |
Notas : |
Modalidad: poster. |
Contenido : |
The repeat breeder syndrome has been characterised in dairy cows, but the experimental model used virgin heifers as controls, which may potentially be sub-fertile. The aim of this study was to characterize the pattern of follicle and corpus luteum (CL) development and progesterone concentrations during the estrus cycle in fertile and sub-fertile adult beef cows. Eleven Hereford cows (fertile n=5; sub-fertile n=6) were used in this experiment. The categories were defined based on their pregnancy rate at 24 and 73 months of age after five services at each age (three by artificial insemination [AI] and two by natural mating) in fertile (pregnant at first AI at two years old, pregnant ≥ 3 times at 73 months of age) and sub-fertile (pregnant at the fourth of fifth service by natural mating or did not got pregnant at 24 months of age and got pregnant one or two times at 73 months of age). At 90 months of age, were synchronized with two intramuscular prostaglandin injections given 14 d apart. The ovarian scanning began on the day of the second PG injection and continued daily for a complete estrous cycle up to d 7 of the following cycle.
Plasma samples were collected daily by jugular venepuncture to determinate progesterone concentrations by RIA. Data were analysed by ANOVA, using the GLM and MIXED procedures in SAS. There were no differences in body weight, body condition or height between fertile and sub-fertile cows. There were no differences between groups in follicular dynamics, area of the CL, number of 2 to 5 mm follicles, total number of follicles, duration of the estrous cycle or interval from estrus to ovulation. However, progesterone concentrations were higher in subfertile (7.58 ± 0.96 ng/ml) than in fertile (5.19 ± 1.08 ng/ml; P<0.01) cows from d 8 to 18 of the cycle. In conclusion, under the conditions in which this experiment was conducted, sub-fertile cows had higher concentrations of progesterone than fertile cows. These findings could be associated with the expression of its receptors in the uterus2 known to affect embryo survival. MenosThe repeat breeder syndrome has been characterised in dairy cows, but the experimental model used virgin heifers as controls, which may potentially be sub-fertile. The aim of this study was to characterize the pattern of follicle and corpus luteum (CL) development and progesterone concentrations during the estrus cycle in fertile and sub-fertile adult beef cows. Eleven Hereford cows (fertile n=5; sub-fertile n=6) were used in this experiment. The categories were defined based on their pregnancy rate at 24 and 73 months of age after five services at each age (three by artificial insemination [AI] and two by natural mating) in fertile (pregnant at first AI at two years old, pregnant ≥ 3 times at 73 months of age) and sub-fertile (pregnant at the fourth of fifth service by natural mating or did not got pregnant at 24 months of age and got pregnant one or two times at 73 months of age). At 90 months of age, were synchronized with two intramuscular prostaglandin injections given 14 d apart. The ovarian scanning began on the day of the second PG injection and continued daily for a complete estrous cycle up to d 7 of the following cycle.
Plasma samples were collected daily by jugular venepuncture to determinate progesterone concentrations by RIA. Data were analysed by ANOVA, using the GLM and MIXED procedures in SAS. There were no differences in body weight, body condition or height between fertile and sub-fertile cows. There were no differences between groups in follicular d... Presentar Todo |
Palabras claves : |
FOLLICULAR DYNAMICS; SUB-FERTILITY. |
Thesagro : |
PROGESTERONA. |
Asunto categoría : |
L53 Fisiología Animal - Reproducción |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/6087/1/pagina-44.pdf
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Marc : |
LEADER 02940naa a2200229 a 4500 001 1055710 005 2016-09-22 008 2016 bl uuuu u00u1 u #d 100 1 $aALVEZ, A. 245 $aSub-fertility in beef cattle$bfollicle dynamics and progesterone concentration during the estrus cycle. [Resumen de poster].$h[electronic resource] 260 $c2016 300 $ap. 44 500 $aModalidad: poster. 520 $aThe repeat breeder syndrome has been characterised in dairy cows, but the experimental model used virgin heifers as controls, which may potentially be sub-fertile. The aim of this study was to characterize the pattern of follicle and corpus luteum (CL) development and progesterone concentrations during the estrus cycle in fertile and sub-fertile adult beef cows. Eleven Hereford cows (fertile n=5; sub-fertile n=6) were used in this experiment. The categories were defined based on their pregnancy rate at 24 and 73 months of age after five services at each age (three by artificial insemination [AI] and two by natural mating) in fertile (pregnant at first AI at two years old, pregnant ≥ 3 times at 73 months of age) and sub-fertile (pregnant at the fourth of fifth service by natural mating or did not got pregnant at 24 months of age and got pregnant one or two times at 73 months of age). At 90 months of age, were synchronized with two intramuscular prostaglandin injections given 14 d apart. The ovarian scanning began on the day of the second PG injection and continued daily for a complete estrous cycle up to d 7 of the following cycle. Plasma samples were collected daily by jugular venepuncture to determinate progesterone concentrations by RIA. Data were analysed by ANOVA, using the GLM and MIXED procedures in SAS. There were no differences in body weight, body condition or height between fertile and sub-fertile cows. There were no differences between groups in follicular dynamics, area of the CL, number of 2 to 5 mm follicles, total number of follicles, duration of the estrous cycle or interval from estrus to ovulation. However, progesterone concentrations were higher in subfertile (7.58 ± 0.96 ng/ml) than in fertile (5.19 ± 1.08 ng/ml; P<0.01) cows from d 8 to 18 of the cycle. In conclusion, under the conditions in which this experiment was conducted, sub-fertile cows had higher concentrations of progesterone than fertile cows. These findings could be associated with the expression of its receptors in the uterus2 known to affect embryo survival. 650 $aPROGESTERONA 653 $aFOLLICULAR DYNAMICS 653 $aSUB-FERTILITY 700 1 $aGUILLEN, S. 700 1 $aSEQUEIRA, M. 700 1 $aMEIKLE, A. 700 1 $aVIÑOLES, C. 773 $tln: Encuentro de Investigadores de la Región Noreste: Cerro Largo-Rivera-Tacuarembó, 1., 12 de agosto de 2016, Campus Interinstitucional de Tacuarembó, Tacuarembó. Libro de Resúmenes. Tacuarembó: UDELAR; INIA, 2016.
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INIA Tacuarembó (TBO) |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas; INIA Tacuarembó. |
Fecha actual : |
21/02/2014 |
Actualizado : |
03/02/2018 |
Tipo de producción científica : |
Capítulo en Libro Técnico-Científico |
Autor : |
MONTOSSI, F.; SAN JULIÁN, R.; DE MATTOS, D.; BERRETTA, E.J.; RÍOS, M.; ZAMIT, W.; LEVRATTO, J. |
Afiliación : |
FABIO MARCELO MONTOSSI PORCHILE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ROBERTO SAN JULIAN SANCHEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DANIEL DE MATTOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ELBIO JOAQUIN BERRETTA CARVALLO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; M. RÍOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; WILFREDO SHAMIL ZAMIT DUARTE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JUAN CARLOS LEVRATTO CORTES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Alimentación y manejo de la oveja de cría durante el último tercio de gestación en la región de Basalto |
Complemento del título : |
OVINOS |
Fecha de publicación : |
1998 |
Fuente / Imprenta : |
In: BERRETTA, E.J. (Ed.). Seminario de actualización en tecnologías para basalto. INIA Tacuarembó, 3-4 diciembre 1998. Montevideo (Uruguay): INIA, 1998. |
Páginas : |
p. 195-208 |
Serie : |
(INIA Serie Técnica ; 102) |
ISSN : |
1688-9266 |
Idioma : |
Español |
Notas : |
INIA Tacuarembó |
Contenido : |
El objetivo principal del presente trabajo es diseñar estrategias combinadas de uso de la CC al parto y de manejo de la alimentación sobre campo natural y mejoramientos de campo diferidos durante el último tercio de gestación como instrumento para incrementar ia producción de ovejas y corderos. |
Thesagro : |
ALIMENTACION DE LOS ANIMALES; CAMPO NATURAL; OVEJA; SUELO BASALTICO. |
Asunto categoría : |
-- L01 Ganadería |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/7977/1/ST-102-195-208.pdf
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Marc : |
LEADER 01219naa a2200289 a 4500 001 1012079 005 2018-02-03 008 1998 bl uuuu u00u1 u #d 022 $a1688-9266 100 1 $aMONTOSSI, F. 245 $aAlimentación y manejo de la oveja de cría durante el último tercio de gestación en la región de Basalto 260 $c1998 300 $ap. 195-208 490 $a(INIA Serie Técnica ; 102) 500 $aINIA Tacuarembó 520 $aEl objetivo principal del presente trabajo es diseñar estrategias combinadas de uso de la CC al parto y de manejo de la alimentación sobre campo natural y mejoramientos de campo diferidos durante el último tercio de gestación como instrumento para incrementar ia producción de ovejas y corderos. 650 $aALIMENTACION DE LOS ANIMALES 650 $aCAMPO NATURAL 650 $aOVEJA 650 $aSUELO BASALTICO 700 1 $aSAN JULIÁN, R. 700 1 $aDE MATTOS, D. 700 1 $aBERRETTA, E.J. 700 1 $aRÍOS, M. 700 1 $aZAMIT, W. 700 1 $aLEVRATTO, J. 773 $tIn: BERRETTA, E.J. (Ed.). Seminario de actualización en tecnologías para basalto. INIA Tacuarembó, 3-4 diciembre 1998. Montevideo (Uruguay): INIA, 1998.
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