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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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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha actual : |
21/02/2014 |
Actualizado : |
30/09/2019 |
Tipo de producción científica : |
Artículos en Revistas Agropecuarias |
Autor : |
CUETO CARRIÓN, G.; RACHID, C.; RESQUÍN, F.; O´NEILL, H.; OTHA, S. |
Afiliación : |
GUILLERMO CUETO CARRION, Estudiante de Maestría en Ciencias Agrarias; ANA CECILIA RACHID CASNATI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSE FERNANDO RESQUIN PEREZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; HUGO O´NEIL, LATU (LABORATORIO TECNOLÓGICO DEL URUGUAY); SADAAKI OTHA, LATU (LABORATORIO TECNOLÓGICO DEL URUGUAY). |
Título : |
Debobinado de E. Grandis: influencia del raleo en la productividad y calidad. |
Fecha de publicación : |
2009 |
Fuente / Imprenta : |
Forestal: revista de la Sociedad de Productores Forestales, 2009, época 2, v. 13, no. 38, p. 23-29. |
Idioma : |
Español |
Contenido : |
El objetivo de este trabajo es comparar el efecto del raleo sobre la cantidad y calidad de madera producida para debobinado de un rodal a turno final y sometido a distintas intensidades de raleo. Trabajo que se enmarca dentro del proyecto y es parte integrante de un trabajo de maestria. |
Thesagro : |
EUCALYPTUS; EUCALYPTUS GRANDIS; MADERA; RALEO. |
Asunto categoría : |
K10 Producción forestal |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/12286/1/38-2009.pdf
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Marc : |
LEADER 00910naa a2200217 a 4500 001 1028693 005 2019-09-30 008 2009 bl uuuu u00u1 u #d 100 1 $aCUETO CARRIÓN, G. 245 $aDebobinado de E. Grandis$binfluencia del raleo en la productividad y calidad. 260 $c2009 520 $aEl objetivo de este trabajo es comparar el efecto del raleo sobre la cantidad y calidad de madera producida para debobinado de un rodal a turno final y sometido a distintas intensidades de raleo. Trabajo que se enmarca dentro del proyecto y es parte integrante de un trabajo de maestria. 650 $aEUCALYPTUS 650 $aEUCALYPTUS GRANDIS 650 $aMADERA 650 $aRALEO 700 1 $aRACHID, C. 700 1 $aRESQUÍN, F. 700 1 $aO´NEILL, H. 700 1 $aOTHA, S. 773 $tForestal: revista de la Sociedad de Productores Forestales, 2009, época 2$gv. 13, no. 38, p. 23-29.
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