Cómo citar
Uribe Velásquez, L. F. ., Oba, E. ., & Lenz Souza, M. I. . (2007). Respuesta endocrina y ovárica a la sincronización del estro y de la ovulación utilizando CIDR y eCG en ovejas. Revista Veterinaria Y Zootecnia (On Line), 1(1), 9–17. Recuperado a partir de https://revistasojs.ucaldas.edu.co/index.php/vetzootec/article/view/5806

Autores/as

Luis Fernando Uribe Velásquez
lfuribe@ucaldas.edu.co
Eunice Oba
Universidad Estatal Paulista
sincorreo@ucaldas.edu.co
Maria Inês Lenz Souza
Universidade Federal de Mato Grosso do Sul
sincorreo@ucaldas.edu.co

Resumen

RESUMEN: Los efectos del CIDR y eCG (gonadotrofina coriónica equina) en la dinámica de la población folicular y su relación con las concentraciones plasmáticas de P4 fueron investigadas en ovejas cíclicas. Fueron utilizadas 14 hembras ovinas de la raza Bergamascia; el Grupo 1 (G1) se sometió a dos aplicaciones de PGF2α y, el Grupo 2 (G2) tratado con CIDR durante 14 días siendo que, en el momento de su retirada, se administraron 500 UI de eCG. La dinámica folicular ovárica fué monitoreada por medio de ecógrafo. Se monitorearon todos los folículos con diámetro mayor o igual a 2 mm y se graficó su posición diariamente, observándose el desarrollo individual folicular. Desde el día anterior a la aplicación de la segunda dosis de PGF2α (G1) y desde la administración de eCG (G2) hasta el décimo día del ciclo estral, se colectaron muestras de sangre para el análisis de P4. Hubo diferencia significativa (p<0,001) en las concentraciones plasmáticas de P4 entre los tratamientos. La sincronización del estro y ovulación utilizando CIDR + 500 UI de eCG, incrementó la cantidad de folículos reclutados, además de aumentar el diámetro máximo y la tasa de crecimiento de los folículos grandes en la primera onda folicular.

Acritopoulou, S.; Haresign, W.; Foster, J.P. et al. Plasma progesterone and LH concentrations in ewes after injection of an analogue of prostaglandin F-2a. Journal of Reproduction and Fertility, v.49, p.337- 340, 1977.

Aisen, E.G. Reproducción ovina y caprina. In: Freitas, V.J.F.; Rubianes, E. Preparación de las hembras. Detección y control del estro y la ovulación. 1. ed. Inter–Médica: S.A.I.C.I., Buenos Aires, Argentina, p.87-98, 2004.

Amiridis, G. S.; Valasi, I.; Menegatos, I. Luteal stage dependence of pituitary response to gonadotrophin- releasing hormone in cyclic dairy ewes subjected to synchronization of ovulation. Reproduction Fertility and Development, v.17, p.769-774, 2005.

Cardwell, B.E.; Fitch, G.Q.; Geisert, R.D. Ultrasonic evaluation for the time of ovulation in ewes treated with norgestomet and norgestomet followed by pregnant mare’s serum gonadotropin. Journal of Animal Science, v.76, p. 2235-2238, 1998.

Castonguay, F. ; Dufour, J.J. ; Minvielle, F. Follicular dynamics and dominance in Boorola x Finnish Landrace and Boorola x Suffolk ewes heterozygous for the F gene. Journal Reproduction of Fertility, v.89, p.193-203, 1990.

Driancourt M.A, WW Thatcher, M Terqui. Dynamics of ovarian follicular development in cattle during the estrous cycle, early pregnancy and in response to PMSG. Domestic Animal Endocrinology, v.8, p.209- 221, 1991.

Driancourt, M.A.; Gougeon, A.; Royère, D. Reproduction in mammals and man. R.H.F. Hunter, 1993, 305p.

Evans, G.; Robinson, T.J. The control of fertility in sheep: endocrine and ovarian responses to progestagen-PMSG treatment in the breeding season and in anoestrus. Journal Agricultural Science, v.94, p.69-88, 1980.

Godfrey, R. W.; Gray, L.; Collins, J.R. Estrus synchronization of sheep in the tropics using either controlled internal drug release (CIDR) dispensers or prostaglandin F2 (PGF). Journal of Animal Science, v.73, p.232, 1995.

Gonzalez-Añover, P.; Encinas, T.; Veiga-Lopez, A. Effects of breed on follicular dynamics and oestradiol secretion during the follicular phase in sheep. Reproduction Domestic Animal, v.49, p.29-33, 2007.

Hackett, A.J.; Robertson, H.A. Effect of dose and time of injection of prostaglandin F2 in cycling ewes. Theriogenology, 13: 347-351, 1980.

Herrera, H.L.; Feldman, S.D.; Zarco, Q.L. Evaluación del efecto luteolítico de la prostaglandina F2 alfa en diferentes días del ciclo estral de la borrega. Veterinaria México, v.21, p.143-147, 1990.

Lafrance, M.; Goff, A.K. Effect of pregnancy on oxytocin- induced release of prostaglandin F2α in heifers. Biology of Reproduction, v.3, p.1113-1119, 1985.

Latour, D.; Littell, R. Advanced general linear models with an emphasis on mixed models. Version 6.12. Cary: SAS Institute, 1996, 268p.

Liu, X.; Dai, Q.; Rawlings, N.C. Ultrasonographic image attributes of non-ovulatory follicles and follicles with different luteal outcomes in gonadotropin- releasing hormone (GnRH)-treated anestrous ewes. Theriogenology, v.67, p.957-69, 2007.

Leyva, V.; Buckrell, B.C.; Walton, J.S. Regulation of follicular and ovulation in ewes by exogenous progestagen. Theriogenology, 50: 395-416, 1998.

McGinley, R.; Casey, J.H. Analysis of progesterone in unextrated serum; a method using danazol (17 ∞-preg (2,3) isoxasol-17-ol) a bloker of steroid binding to ptoteins. Steroids, v.33, p.127-138, 1979.

McNatty, K.P.; Gibb, M.; Dobson, C. Preovulatory follicular development in sheep treated with PMSG and/or prostaglandin. Journal Reproduction and Fertility, v.65, p.111-123, 1982.

McNeilly, A.S.; Picton, H.M.; B K Campbell, B.K. Gonadotrofic control of follicle growth in the ewe. Journal of Reproduction Fertility, v.43, p.177-186, 1991.

Mihm, M. ; Diskin, M.G. ; Roche, J.F. Regulation of follicle wave growth in cattle. Reproduction Domestic Animal, 31: 531-538, 1996.

Naqvi, S.M.K.; Gulyani, R.; Pmittal, J. Estrus synchronization response in Kheri ewes treated with prostaglandin F  Indian Journal of Animal Science, v.68, p.564-565, 1998.

Noel, B.; Bister, J.L.; Pierquin, B. Effects of FGA and PMSG on follicular growth and LH secretion in Suffolk ewes. Theriogenology, 41: 719-727, 1994.

Oyedipe, E.O.; Pathiraja, N.; Gyang, E.O. Effect of dose of pregnant mare serum gonadotrophin on estrus parameters, ovulation rate and peripheral progesterone concentrations inYankasa ewes. Animal Reproduction Science, v.20, p.255-264, 1989.

Pearce, D. T. ; Robinson, T.J. Plasma progesterone concentrations, ovarian and endocrinological responses and sperm transport in ewes with synchronized oestrus. Journal Reproduction Fertility, v.75, p.49-62, 1985.

Pierson, R. A.; Ginther, J.O. Follicular populations during the estrous cycle in heifers. I- Influence of day. Animal Reproduction Science, v.14, p.165-176, 1987.

Ravindra, J. P.; Rawlings, N.C.; Evans, A.C.O. Ultrasonographic study of ovarian follicular dynamics in ewes during the estrous cycle. Journal Reproduction Fertility, v.101, p.501-509, 1994.

Rubianes, E.; Ungerfeld, R.; Viñoles, C. Ovarian response to superstimulatory treatment initiated relative to wave emergency in ultrasonographically monitored ewes. Theriogenology, v.47, p.1479-1488, 1997.

Rubianes, E., Castro, T.; Kmaid, S. Estrus response after a short progesterone priming in seasonally anestrous goats. Theriogenology, v.49, p.356-362, 1998.

Safdarian, M.; Kafi, M.; Hashemi, M. Reproductive performance of Karakul ewes following different oestrous synchronization treatment outside the natural breeding season. South african Journal of Animal Science, v.36, p.229-234, 2006.

Scaramuzzi, R.J, H M Radford. Factors regulating ovulation rate in the ewe. Journal Reproduction Fertility, v.69, p.353-367, 1993.

Schrick, F. N.; Surface, R.A.; Pritchard, J.Y. Ovarian structures during the estrous cycle and early pregnancy in ewes. Biology of Reproduction, v.49, p.1133-1140, 1993.

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