VARIACIÓN INTERRACIAL E INDIVIDUAL EN NOVILLAS DONANTES DE OVOCITOS RECOLECTADOS EMPLEANDO ASPIRACIÓN FOLICULAR TRANSVAGINAL

Alex Solís-Corrales; César Vigil; Reinaldo De Armas

Submitted December 1, 2022

Published 2022-12-05

Artículos

Vol. 5 No. 1: Revista Investigaciones Agropecuarias

VARIATION BETWEEN AND WITHIN BREEDS IN DONORS HEIFERS OF OOCYTES COLLECTED BY TRANSVAGINAL OVUM PICK-UP

Alex Solís-Corrales⁺⁻
César Vigil⁺⁻
Reinaldo De Armas

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Citación:

DOI: ND

Published: 2022-12-05

How to Cite

Solís-Corrales, A., Vigil, C., & De Armas, R. (2022). VARIATION BETWEEN AND WITHIN BREEDS IN DONORS HEIFERS OF OOCYTES COLLECTED BY TRANSVAGINAL OVUM PICK-UP. Journal of Agricultural Research, 5(1), 8–17. Retrieved from https://revistas.up.ac.pa/index.php/investigaciones_agropecuarias/article/view/3348

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Abstract

This research was aimed to evaluate the individual variation among oocyte donors, collected by Transvaginal Ovum Pick-Up (OPU). The variables evaluated were the total number of collected oocytes and the amount of viables for In Vitro Embryo Production (IVEP). Eight Gyr heifers and eight Fleckvieh heifers were used in the study. Environmental conditions were similar within breed and varied between breed. Data were analyzed using a Randomized Block Design and Duncan's test was employed to compare means between treatments. No statistical differences (P>0.05) were found in the number of total collected oocytes between females Gyr (9.81 SE 1.04) and Fleckvieh (9.00 SE 1.04). No differences were found (P>0.05) in terms of number of viable oocytes (Gyr: 5.94 SE 0.76 vs Fleckvieh: 6.63 SE 0.76). Significant statistically individual variation (P<0.05) was found within the two evaluated breeds, both for total number of oocytes and viable ones. However, the number of viable collected oocytes was the variable with the highest percentage of individual variation. It is concluded that the superiority shown in multiple investigations by Bos indicus animals such as those of the Gyr breed over Bos taurus animals such as those of the Fleckvieh breed, in terms of the number of oocytes collected by OPU, can be altered by environmental conditions. There is individual variation for the total number of oocytes collected by OPU and viable ones selected for IVEP, obtained from donors with similar conditions of breed, age, weight, biological stage, body condition, reproductive status and environment.

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References

Aerts, J. M. J., & Bols, P. E. J. (2010). Ovarian follicular dynamics. A review with emphasis on the bovine species. Part II: Antral development, exogenous influence and future prospects. Reproduction in domestic animals, 45(1), 180-187.
Baruselli, P. S., Sá Filho, M. F. D., Ferreira, R. M., Sales, J. N. S., Gimenes, L. U., Vieira, L. M; ... & Bó, G. A. (2012). Manipulation of follicle development to ensure optimal oocyte quality and conception rates in cattle. Reproduction in Domestic Animals, 47, 134-141.
Blaschi, W., Andrade, E. R., Nonato Junior, I., Pontes, J. H. F., Ereno Junior, J. C., Uvo, S., & Seneda, M.M. (2008). Utilização prévia do Pluset na aspiração follicular: impacto na produção in vitro de embriões em vacas Bos indicus. Acta Scientiae Veterinariae, 32, 186.
Bó, G. A. (2002). Dinámica folicular y tratamientos hormonales para sincronizar la ovulación en el ganado bovino. XI Congreso Venezolano de Producción e Industria Animal. Valera, Venezuela.
Carvalho, J. B. P. D., Carvalho, N. A. T. D., Reis, E. L., Nichi, M., Souza, A. H. D., & Baruselli, P. S. (2008). Effect of early luteolysis in progesterone-based timed AI protocols in Bos indicus, Bos indicus× Bos taurus, and Bos taurus heifers. Theriogenology, 69(2), 167-175.
De Loos, F., Van Vliet, C., Van Maurik, P., & Kruip, T. A M. (1989). Morphology of immature bovine oocytes. Gamete Research, 24, 197-204.
Evans, A. C. O., Mossa, T. F., Lonergan, P., Smith, G. W., Jimenez-Krassel, F., Folger, J. K., Ireland, J. L. H., & Ireland, J. J. (2010). Variation in the number of ovarian follicles in cattle: possible causes and consequences. Reproduction in Domestic Ruminants, 67(1), 421-9.
Aerts, J. M. J., & Bols, P. E. J. (2010). Ovarian follicular dynamics. A review with emphasis on the bovine species. Part II: Antral development, exogenous influence and future prospects. Reproduction in domestic animals, 45(1), 180-187.
Baruselli, P. S., Sá Filho, M. F. D., Ferreira, R. M., Sales, J. N. S., Gimenes, L. U., Vieira, L. M; ... & Bó, G. A. (2012). Manipulation of follicle development to ensure optimal oocyte quality and conception rates in cattle. Reproduction in Domestic Animals, 47, 134-141.
Blaschi, W., Andrade, E. R., Nonato Junior, I., Pontes, J. H. F., Ereno Junior, J. C., Uvo, S., & Seneda, M.M. (2008). Utilização prévia do Pluset na aspiração follicular: impacto na produção in vitro de embriões em vacas Bos indicus. Acta Scientiae Veterinariae, 32, 186.
Bó, G. A. (2002). Dinámica folicular y tratamientos hormonales para sincronizar la ovulación en el ganado bovino. XI Congreso Venezolano de Producción e Industria Animal. Valera, Venezuela.
Carvalho, J. B. P. D., Carvalho, N. A. T. D., Reis, E. L., Nichi, M., Souza, A. H. D., & Baruselli, P. S. (2008). Effect of early luteolysis in progesterone-based timed AI protocols in Bos indicus, Bos indicus× Bos taurus, and Bos taurus heifers. Theriogenology, 69(2), 167-175.
De Loos, F., Van Vliet, C., Van Maurik, P., & Kruip, T. A M. (1989). Morphology of immature bovine oocytes. Gamete Research, 24, 197-204.
Evans, A. C. O., Mossa, T. F., Lonergan, P., Smith, G. W., Jimenez-Krassel, F., Folger, J. K., Ireland, J. L. H., & Ireland, J. J. (2010). Variation in the number of ovarian follicles in cattle: possible causes and consequences. Reproduction in Domestic Ruminants, 67(1), 421-9.