La introducción de un macho al inicio de la fase luteal modifica las características de las oleadas foliculares en las cabras cíclicas
DOI:
https://doi.org/10.59741/agraria.v7i1-2-3.437Keywords:
Goats, follicular development, estral cycle, follicleAbstract
This assay was performed to determine if the introduction of a male at the beginning of the luteal phase modifies the characteristics of the follicular wave in cyclical goats. So, during the sexual season, 17 multiparous females were synchronized with two doses of a prostaglandin analog at an interval of 7 days. A group of females (Control; n=9) had no contact with any male during the assay. In the other group (G3; n=8) the introduction of the male was done at the beginning of the luteal phase (day 3 of the estrous cycle). The ovarian activity was monitored daily during a complete estrous cycle through transrectal ultrasonography. The number of follicular waves in all the females was registered, as well as the size and the position of the follicles bigger than 3 mm. In the control group , 11,1% (1/9) of the females registered 3 follicular waves, 77. 8% (7/9) registered 4 waves and 11,1% (1/9) had 5 waves during an estrous cycle. In the G3 group, the 62,5% (5/8) registered 3 waves, and 37,5% (3/8) 4. The average duration of the follicular waves was longer in the females of the G3 than in the Control Group (P < 0,05). In the G3 group the follicles of wave 1 and 2 were bigger than those of the follicles 1 and 2 of the Control group (P < 0,05). It may be concluded that the introduction of the buck at the beginning of the luteal phase modifies the duration of the follicular waves, and the size of the follicles in the cyclical goats.
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Camp, J.C., Wildt, D.E., Howard, P.K., Stuart, L.D., Chakraborty, P.K. 1983. Ovarian activity during nor mal and abnormal length estrous cycles in the goat. Biol. Reprod. 28:673-681. DOI: https://doi.org/10.1095/biolreprod28.3.673
Chemineau, P. 1983. Effects on oestrus and ovulation of exposing Creole goats to the male at three times of the year. J. Reprod. Fertil. 67:65-72. DOI: https://doi.org/10.1530/jrf.0.0670065
De Castro, T., Rubianes, E., Menchaca, A., Rivero, A. 1999. Ovarian dynamics, serum estradiol and progesterona concentrations during the interovulatory interval in goats. Theriogenol. 52:399-411. DOI: https://doi.org/10.1016/S0093-691X(99)00138-7
Delgadillo, J.A., Flores, J.A., Veliz, F.G., Duarte, G., Vielma, J., Poindron, P., Malpaux, B. 2003. Control de la reproducción de los caprinos del subtrópico mexicano utilizando tratamientos fotoperiódicos y efecto macho. Vet. Mex. 34:69-79.
Delgadillo, J.A., Fitz-Rodríguez, G., Duarte, G., Véliz, F.G., Carrillo, E., Flores, J.A., Vielma, J., Hernández, H.F., Malpaux, B. 2004. Management of photoperiod to con trol caprine reproduction in the subtropics. Reprod. Fertil. Dev.16:1-8. DOI: https://doi.org/10.1071/RD04030
Delgadillo, J.A., Flores, J.A., Veliz, G., Duarte, G., Vielma, J., Hernández, H., Fernández, I.G. 2006. Importance
of the signals provided by the buck for the success of the male effect in goats. Reprod. Nutri. Dev. Duarte, G. 2000. Estacionalidad reproductiva y efecto del fotoperiodo sobre la actividad ovulatoria de las hembras caprinas de la Comarca Lagunera (tesis de Doctorado). Facultad de Medicina Veterinaria y Zootecnia. UNAM. México DF. pp 35.
Evans, A.C.O., Duffy, P., Hynes, N., Boland, M.P. 2000. Waves of follicle development during the estrous cycle in sheep. Theriogenology. 53:699-715. DOI: https://doi.org/10.1016/S0093-691X(99)00268-X
Evans, A.C.O. 2003. Characteristic of ovarian follicle development in domestic animals. Reprod. Dom. Anim. 38:240-246. DOI: https://doi.org/10.1046/j.1439-0531.2003.00439.x
Flores, J.A., Veliz, F.G., Pérez-Villanueva, J.A., Martínez de la Escalera, G., Chemineau, P., Poindron, P., Malpaux, B., Delgadillo, J.A. 2000. Male reproductive condition is the limiting factor of efficiency in the male effect during seasonal anestrus in female goats. Biol. Reprod. 62:1409-1414. DOI: https://doi.org/10.1095/biolreprod62.5.1409
Fortune, J.E., Rivera, G.M., Evans, A.C.O., Turzillo, A.M. 2001. Differentiation of dominant versus subordinate follicles in cattle. Biol. Reprod. 65:648-654. DOI: https://doi.org/10.1095/biolreprod65.3.648
Ginther, O.J., Kot, K. 1994. Follicular dynamics during the ovulatory season in goats. Theriogenol. 42:987-1001. Goodman, R.L. 1994. Neuroendocrine control of the ovine estrous cycle. En Physiology of reproduction. Knobil, E., Neil, J.D. (eds). Segunda edición. Raven Press, Ltd. New York, USA. DOI: https://doi.org/10.1016/0093-691X(94)90121-X
Llewelyn, C.A., Ogaa, J.S., Obwolo, M.J. 1993. Plasma progesterone profiles and variation in cyclic ovarian activity throughout the year in indigenous goats in Zim babwe. Anim. Reprod. Sci. 30:301-311. DOI: https://doi.org/10.1016/0378-4320(93)90080-B
Medan, M.S., Watabe, B., Sasaki, K., Sharawy, S., Groome, N.P., Taya, K. 2003. Ovarian dynamics and their association with peripheral concentration of go nadotropins, ovarian steroids, and inhibin during the estrous cycle in goats. Biol. Reprod. 69:57-63. DOI: https://doi.org/10.1095/biolreprod.102.013334
Menchaca, A., Miller, V., Gil, J., Pinczak. A., Laca, M., Rubianes, E. 2004. Prostaglandin F2a treatment asso ciated with timed artificial insemination in ewes. Reprod. Dom. Anim. 39:1-4. DOI: https://doi.org/10.1111/j.1439-0531.2004.00527.x
Ngere, L.O., Dzakuma, J.M. 1975. The effect of sudden introduction of rams on oestrus pattern of tropical ewes. J. Agric. Sci. Camb. 84:263-264. DOI: https://doi.org/10.1017/S0021859600052382
Orita, J., Tanaka, T., Kamomae, H., Kaneda, Y. 2000. Ultrasonographic observation of follicular and luteal dynamics during the estrous cycle in Shiba goats. J. Reprod. Dev. 46:31-37. DOI: https://doi.org/10.1262/jrd.46.31
Rosa, H.J.D., Bryant, M. J. 2002. The “ram effect” as a way of modifying the reproductive activity in the ewe: a review. Small. Rumin. Res. 45:1-16. DOI: https://doi.org/10.1016/S0921-4488(02)00107-4
Simões, J., Almeida, J.C., Valentim, R., Baril., Azevedo, J., Fontes, P., Mascarenhas, R. 2006. Follicular dynamics in Serrana goats. Anim. Reprod. Sci. 95:16-26. DOI: https://doi.org/10.1016/j.anireprosci.2005.09.005
Skinner, D.C. Cillier, S.D. Skinner, J.D. 2002. Effect of ram introduction on the oestrous cycle of springbok ewes (Antidorcas marsupialis). Reproduction. 124:509-513. DOI: https://doi.org/10.1530/rep.0.1240509
Ungerfeld, R., Forsberg, M., Rubianes, E. 2004. Over view of the response of anoestrous ewes to the ram effect. Reprod. Fertil. Dev. 16:479-490. DOI: https://doi.org/10.1071/RD04039
Yu, Y.S., Luo, M.J., Han, Z.B., Li, W., Sui, H.S., Tan, J.H. 2005. Serum and follicular fluid steroid levels as re lated to follicular development and granulose cell apoptosis during the estrous cycle of goats. Small. Rumin. Res. 57:57-65. DOI: https://doi.org/10.1016/j.smallrumres.2004.06.015
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