legales2011 1.indd
The aim of the present study was to evaluate the effect of a progesterone releasing intravaginal device plus the injection of PGF2? at removal and the application of hCG on day 5 after withdrawal on the ovarian activity in cyclic mares. Additionally, pregnancy rates were evaluated at the end of the...
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | Artículo publishedVersion |
| Lenguaje: | Español |
| Publicado: |
Universidad de Buenos Aires. Facultad de Ciencias Veterinarias.
2011
|
| Materias: | |
| Acceso en línea: | http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_3819 https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_3819.dir/3819.PDF |
| Aporte de: |
| id |
I28-R145-HWA_3819 |
|---|---|
| record_format |
dspace |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
| language |
Español |
| orig_language_str_mv |
spa |
| topic |
Sincronización Progesterona Yeguas cíclicas Synchronization Progesterone Cyclic mares |
| spellingShingle |
Sincronización Progesterona Yeguas cíclicas Synchronization Progesterone Cyclic mares Bianchi, C.P. Guerrero, R. Videla Dorna, I. Cavilla, M.V. Aba, M.A. legales2011 1.indd |
| topic_facet |
Sincronización Progesterona Yeguas cíclicas Synchronization Progesterone Cyclic mares |
| description |
The aim of the present study was to evaluate the effect of a progesterone releasing intravaginal device plus the injection of PGF2? at removal and the application of hCG on day 5 after withdrawal on the ovarian activity in cyclic mares. Additionally, pregnancy rates were evaluated at the end of the study. Animals were divided into two groups: Treated with an intravaginal device containing 1.38 g progesterone during 8 days plus PGF2? at the removal time and an hCG injection to animals with a follicle with a diameter ? 30 mm on day 5 and controls (no treatment). Four days after removal, animals were mated. Plasma progesterone concentrations remained 2.1 ng ml-1 during the period that the devices were kept into the vagina. An ovulatory follicle between the device removal and hCG application was observed in 83.4% (25/30) of the treated animals: 68% (17/25) ovulated in response to hCG while 32% (8/25) ovulated spontaneously during the fi rst 4 days post device removal. In the control group, ovulations occurred randomly. On day 45, animals were ultrasonographed for pregnancy diagnosis. It was recorded a higher percentage of pregnant mares during the fi rst days post treatment in the T group although differences were not statistically signifi cant. In summary, the use of an intravaginal device containing progesterone in a protocol as presented in this study permit an important synchronization of the appearance of ovulatory follicles around day 5 after removal. \n |
| format |
Artículo Artículo publishedVersion |
| author |
Bianchi, C.P. Guerrero, R. Videla Dorna, I. Cavilla, M.V. Aba, M.A. |
| author_facet |
Bianchi, C.P. Guerrero, R. Videla Dorna, I. Cavilla, M.V. Aba, M.A. |
| author_sort |
Bianchi, C.P. |
| title |
legales2011 1.indd |
| title_short |
legales2011 1.indd |
| title_full |
legales2011 1.indd |
| title_fullStr |
legales2011 1.indd |
| title_full_unstemmed |
legales2011 1.indd |
| title_sort |
legales2011 1.indd |
| publisher |
Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. |
| publishDate |
2011 |
| url |
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_3819 https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_3819.dir/3819.PDF |
| work_keys_str_mv |
AT bianchicp legales20111indd AT guerreror legales20111indd AT videladornai legales20111indd AT cavillamv legales20111indd AT abama legales20111indd AT bianchicp efectodeundispositivointravaginalconprogesteronasobrelaactividadovaricaenyeguasciclicas AT guerreror efectodeundispositivointravaginalconprogesteronasobrelaactividadovaricaenyeguasciclicas AT videladornai efectodeundispositivointravaginalconprogesteronasobrelaactividadovaricaenyeguasciclicas AT cavillamv efectodeundispositivointravaginalconprogesteronasobrelaactividadovaricaenyeguasciclicas AT abama efectodeundispositivointravaginalconprogesteronasobrelaactividadovaricaenyeguasciclicas AT bianchicp effectofanintravaginaldevicecontainingprogesteroneontheovarianactivityincyclicmares AT guerreror effectofanintravaginaldevicecontainingprogesteroneontheovarianactivityincyclicmares AT videladornai effectofanintravaginaldevicecontainingprogesteroneontheovarianactivityincyclicmares AT cavillamv effectofanintravaginaldevicecontainingprogesteroneontheovarianactivityincyclicmares AT abama effectofanintravaginaldevicecontainingprogesteroneontheovarianactivityincyclicmares |
| _version_ |
1824359796891975680 |
| spelling |
I28-R145-HWA_38192024-11-05 legales2011 1.indd The aim of the present study was to evaluate the effect of a progesterone releasing intravaginal device plus the injection of PGF2? at removal and the application of hCG on day 5 after withdrawal on the ovarian activity in cyclic mares. Additionally, pregnancy rates were evaluated at the end of the study. Animals were divided into two groups: Treated with an intravaginal device containing 1.38 g progesterone during 8 days plus PGF2? at the removal time and an hCG injection to animals with a follicle with a diameter ? 30 mm on day 5 and controls (no treatment). Four days after removal, animals were mated. Plasma progesterone concentrations remained 2.1 ng ml-1 during the period that the devices were kept into the vagina. An ovulatory follicle between the device removal and hCG application was observed in 83.4% (25/30) of the treated animals: 68% (17/25) ovulated in response to hCG while 32% (8/25) ovulated spontaneously during the fi rst 4 days post device removal. In the control group, ovulations occurred randomly. On day 45, animals were ultrasonographed for pregnancy diagnosis. It was recorded a higher percentage of pregnant mares during the fi rst days post treatment in the T group although differences were not statistically signifi cant. In summary, the use of an intravaginal device containing progesterone in a protocol as presented in this study permit an important synchronization of the appearance of ovulatory follicles around day 5 after removal. \n Fil: Bianchi, C.P. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Veterinarias. Area de Endocrinología. Tandil, Argentina Fil: Bianchi, C.P. CONICET. Buenos Aires, Argentina Fil: Guerrero, R. Laboratorio Syntex S.A. Buenos Aires, Argentina Fil: Videla Dorna, I. Laboratorio Syntex S.A. Buenos Aires, Argentina Fil: Cavilla, M.V. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Veterinarias. Area de Endocrinología. Tandil, Argentina Fil: Cavilla, M.V. CONICET. Buenos Aires, Argentina Fil: Aba, M.A. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Veterinarias. Area de Endocrinología. Tandil, Argentina Bianchi, C.P. Guerrero, R. Videla Dorna, I. Cavilla, M.V. Aba, M.A. 2011 Se evaluó el efecto de un dispositivo intravaginal conteniendo progesterona más una inyección de prostaglandina F2? (PGF2?) al retiro del dispositivo y la aplicación de Gonadotrofi na Coriónica humana (hCG) al día 5 post retiro sobre la actividad ovárica en yeguas cíclicas. Adicionalmente, se evaluaron los porcentajes de preñez. Los animales se dividieron en: grupo T: animales tratados a partir del día 0 con dispositivo intravaginal conteniendo 1,38 g de progesterona durante 8 días más aplicación de PGF2? al retiro y al 5to día hCG a aquellos animales con un folículo ? 30 mm y grupo C: animales controles; sin tratamiento. Al 4to día post retiro los animales fueron puestos en servicio por monta natural en manada. El dispositivo indujo concentraciones plasmáticas de progesterona superiores a 2,1 ng ml-1 durante su exposición. En el 83,4% de los animales del grupo T (25/30) se observó la presencia de un folículo ovulatorio entre el retiro del dispositivo y el día de inyección de hCG: el 68% (17/25) ovuló como respuesta a la hCG, mientras que el 32% (8/25) lo hizo espontáneamente en los primeros 4 días post retiro. En los animales controles se registraron ovulaciones aleatoriamente. Al día 45 del retiro, la ecografía demostró un mayor porcentaje de yeguas preñadas en los primeros días post tratamiento en el grupo T, aunque las diferencias no fueron estadísticamente signifi cativas. Se concluye que la utilización de un dispositivo intravaginal en el protocolo descripto, resulta en una importante sincronización de la aparición de folículos ovulatorios alrededor del 5to día post retiro. application/pdf 1514-6634 (impreso) 1668-3498 (en línea) Sincronización Progesterona Yeguas cíclicas Synchronization Progesterone Cyclic mares spa Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ InVet, vol. 13, nº1 Efecto de un dispositivo intravaginal con progesterona sobre la actividad ovárica en yeguas cíclicas Effect of an intravaginal device containing progesterone on the ovarian activity in cyclic mares info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=pveterinaria/invet&cl=CL1&d=HWA_3819 https://repositoriouba.sisbi.uba.ar/gsdl/collect/pveterinaria/invet/index/assoc/HWA_3819.dir/3819.PDF |