Cost and efficiency of multiple ovulation and embryo transfer technique in sheep during four years: Influence of the veterinary capacitation

Authors

DOI:

https://doi.org/10.33448/rsd-v10i9.18312

Keywords:

Biotechnology; Embryo; Genetic improvement; MOET.

Abstract

The multiple ovulation and embryo transfer (MOET) is the most used biotechnology in commercial sheep herds to produce embryos, however, several factors can interfere with the success and financial viability of the technique. The objective of the work was to evaluate the impact of technical training on the costs and financial feasibility of biotechnology. The study was carried out over four years (2017-2020) in a commercial system, in the state of SP, Brazil. Dorper breed ewes (n=35) were submitted to the MOET program using a conventional protocol (256 mg FSH) for up to five times (n=65). Artificial insemination took place on day 16 by laparoscopy and embryos were surgically collected with transfer to recipients (n=140) five days later. Direct costs for carrying out the MOET, reproductive rates and financial results of the cabanha were raised. The average amount of total structures and embryos transferred per collection showed a significant difference between years (P<0.05), with no difference (P>0.05) in the rates of pregnancy, permanent and transient adherence of donors. The gross margin per pregnancy was negative only in the first year and increased substantially in the following years, stabilizing the annual variation between costs and value of animals. In conclusion, the technical training of the veterinarian over four years was able to reduce costs and increase the efficiency of MOET, making the use of the technique financially viable in a Dorper sheep herd, accelerating the genetic improvement in the herd.

Author Biographies

Marcela Sene Rocha , Universidade de São Paulo

Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia (FMVZ)

Paulo Victor dos Santos Pereira, Universidade Federal Fluminense

Programa de Pós-Graduação em Medicina Veterinária (Clínica e Reprodução Animal)

Paulo Sergio Cerqueira Rangel, Universidade do Grande Rio

Unigranrio

References

Alves, L. G. C., Osório, J. C. S., Fernandes, A. R. M., Ricardo, H. A. & Cunha, C. M. (2014). Produção de carne ovina com foco no consumidor. Enciclopédia Biosfera, 10(18), 2399-2014.

Baltrame, R. T., Quirino, C. R., Barioni, R. G. & Lima, V. F. M. H. (2010). Simulação e análise econômica da produção in vivo e in vitro de embriões. Pesquisa Agropecuária Brasileira, 45(12).

Bari, F., Khalid, M., Wolf, B., Haresign, W., Murray, A. & Merrell, B. (2001). The repeatability of superovulatory response and embryo recovery in sheep. Theriogenology, 56(1), 147-155.

Bari, F., Khalid, M., Haresign, W., Murray, A. & Merrell, B. (2003). Factors affecting the survival of sheep embryos after transfer within a MOET program. Theriogenology, 59, 1265-1275.

Bartlewski, P. M., Seaton, P., Oliveira, M. E. F., Kridli, R. T., Murawsky, M. & Schwarz, T. (2016). Intrinsic determinants and predictors of superovulatory yields in sheep: Circulating concentrations of reproductive hormones, ovarian status, and antral follicular blood flow. Theriogenology, 86(1), 130-143.

Baruselli, P. S., Catussi, B. L. C., Abreu, L. A., Elliffi, F. M., Silva, L. G. & Batista, E. O. S. (2019). Challenges to increase the AI and ET markets in Brazil. Animal Reproduction, 16(3), 364-375.

Brasil, O. O., Moreira, N. H., Ramos, A. F. (2014). Situação atual da superovulação em ovinos. Revista Brasileira de Reprodução Animal, 38(3), 147-153.

Bruno-Galarrara, M., Cueto, M., Gibbons, A. E., Pereyra-Bonnet, F., Catalano, R. & Gonzalez-Bulnes, A. (2014). Repeatability of superovulatory response to successive FSH treatments in Merino sheep. Small Ruminant Research, 120(1), 84-89.

Bruno-Galarraga, M., Cueto, M., Gibbons, A., Pereyra-Bonnet, F., Subiabre, M. & Gonzalez-Bulnes, A. (2015). Preselection of high and low ovulatory responders in sheep multiple ovulation and embryo transfer programs. Theriogenology, 84, 784-790.

Cognie, Y. (1999). State of the art in sheep-goat embryo transfer. Theriogenology, 51(1), 105-116.

CBRA (2013). COLÉGIO BRASILEIRO DE REPRODUÇÃO ANIMAL. Manual para exame andrológico e avaliação de sêmen animal (3a ed., pp. 49-104).

Fonseca, J. F., Oliveira, M. E. F., Brandão, F. Z., Batista, R. T. P., Garcia, A. R., Bartlewski, P. M. & Souza-Fabjan, J. M. G. (2019). Non-surgical embryo transfer in goats and sheep: the Brazilian experience. Reproduction, Fertility and Development, 31(1), 17-26.

Galli, C., Duchi, R., Crotti, G., Turini, P., Ponderato, N., Colleoni, S., Lagutina, I. & Lazzari, G. (2003). Bovine embryo technologies. Theriogenology, 59(2), 599-616.

Gerger, R.P.C., Rossetto, R., Ribeiro, E.S., Ortigari, I., Zago, F. C., Aguiar, L.H., Costa, U.M., Lopes, R. F. F., Ambrósio, C. E., Miglino, M. A., Rodrigues, J. L., Forell, F., Bertolini, L. R. & Bertolini, M. (2017). Impact of cumulative gain in expertise on the efficiency of handmade cloning in cattle. Theriogenology, 95, 24-32.

Heikkila, A. M. & Peippo, J. (2012). Optimal utilization of modern reproductive technologies to maximize the gross margin of milk production. Animal Reproduction Science, 132, 129-138.

Mckelvey, W. A. C., Robinson, R. P., Aitken, R. P. & Robertson, I. S. (1986). Repeated recoveries of embryos from ewes by laparoscopy. Theriogenology, 25(6), 855-865.

Phillips, P. E. & Janke, M. M. (2016). Embryo transfer: Techniques, donor and recipients. Veterinary Clinics of North America: Food Animal Practice, 32(2), 365-385.

Ribeiro, E. S., Galvão, K. N., Thatcher, W. W., & Santos (2012). Economics aspects of applying reproductive technologies to dairy herds. Animal Reproduction, 9(3), 370-387.

Simplício, A. A.; Freitas, VJ de F.; da Fonseca, J. F. (2007). Biotécnicas da reprodução como técnicas de manejo reprodutivo em ovinos. Revista Brasileira de Reprodução Animal, 31(2), 234-246.

IETS (2020). Newsletters.

Zhu, J., Moawad, A. R., Wang, C. Y., Li, H. F., Ren, J. Y. & Dai, Y. F. (2018). Advances in in vitro production of sheep embryos. International Journal of Veterinary Science and Medicine, 6, 15-26.

https://www.cnabrasil.org.br/custo-de-produc%CC%A7a%CC%83o-e-ana%CC%81lise-econo%CC%82mico-financeira. Acessado em 5 de junho de 2021.

Published

30/07/2021

How to Cite

ROCHA , M. S.; PEREIRA, P. V. dos S.; RANGEL, P. S. C.; VALENTE, L. C. M.; OLIVEIRA, C. A. de; SOUZA-FABJAN, J. M. G. Cost and efficiency of multiple ovulation and embryo transfer technique in sheep during four years: Influence of the veterinary capacitation . Research, Society and Development, [S. l.], v. 10, n. 9, p. e43910918312, 2021. DOI: 10.33448/rsd-v10i9.18312. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/18312. Acesso em: 14 nov. 2024.

Issue

Section

Agrarian and Biological Sciences