Anticipation of embryos transfer in recipient mares during seasonal anestrus
DOI:
https://doi.org/10.26605/medvet-v17n2-5214Keywords:
Synchronization, pregnancy rates, long action progesteroneAbstract
Among the main difficulties found in equine embryo transfer are the donor-recipient synchronization. Seeking alternatives to optimize the use of recipient mares, the present study evaluated the pregnancy rate after the use of recipients in seasonal anestrus treated with estradiol benzoate (BE) and long-acting progesterone (P4LA) protocol in D3, outside the synchronization window. The study was conducted in Acreúna (GO), in a commercial lease, with 15 recipients divided into three groups: group 1 (G1), control; group 2 (G2), treated with BE + P4LA and embryo transfer on the third day after application of P4LA; group 3 (G3), treated with BE + P4LA and embryo transfer on the fifth day after application of P4LA. All mares were monitored via rectal palpation and ultrasonography, performing the gestational diagnosis 5 days after the embryo transfer. It was concluded that the statistical evaluation showed a significant difference (P = 0.0025) between the pregnancy rates of the three groups, assuring that the protocol with embryo transfer in D3 is efficient. Making the use of recipient mares more flexible.Downloads
References
Aurich C. Reproductive cycles of horses. Animal Reproduction Science, 124: 220-228, 2011.
Blanchard, T.L et al. Manual of equine reproduction. 2nd ed. Missouri: Mosby, 2003. 272 p. Cuervo-Arango, J.; Claes, A.N.; Ruijter-Villani, M.; Stout, T.A. Likelihood of pregnancy after embryo transfer is reduced in recipient mares with a short preceding oestrus. Equine Veterinary Journal, 50(3): 386-390, 2017.
Ginther, O.J. et al. Characterisation of pulses of 13,14-dihydro-15-keto-PGF2alpha (PGFM) and relationships between PGFM pulses and luteal blood flow before, during, and after luteolysis in mares. Reproduction, Fertilility and Development, 20: 684-693, 2008.
Greco, G.M. et al. Use of long-acting progesterone to acyclic embryo recipient mares. Revista Brasileira de Zootecnia, 41(3): 607-611, 2012.
Hollinshead, F.K. et al. The correlation of endogenous progesterone concentration in diestrus on early pregnancy rate in thoroughbred mares. Journal of Equine Veterinary Science, 118: 104127, 2022.
Jacob, J.C.; Santos, G.O.; Oliveira, J.P.; Gastal, M.; Gastal, E.L. Evaluation of reproductive parameters in a commercial equine embryo transfer program. Animal Reproduction Science, 121S: S305-S306, 2010.
Jacob, J. C. F.; Haag, K.Y.; Santos, G.O.; Oliveira, J.P.; Gastal, M.O.; Gastal, E.L. Effect of embryo age and recipient asynchrony on pregnancy rates in a commercial equine embryo transfer program. Theriogenology, 77(6): 1159-1166, 2012.
Kaercher, F.; Siqueira, M.; Mercadante, A.; Figueiredo, T.; Romualdo Weiss, R.R.; Siqueira, F.; Kozicki, L.E. Embryo transfer in no cycling crioula and quarter horse breeds treated with estradiol cipionate and long-acting progesterone. Brazilian Archives of Biology and Technology, 54(6): 1147-1150, 2011.
Kask, K.; Odensvik, K.; Kindahl, H. Prostaglandin F2a release associated with an embryo transfer procedure in the mare. Equine Veterinary Journal, 29(4): 286-289, 1997.
Lima, R.A.S.; Cintra, A.G. Revisão do Estudo do Complexo do Agronegócio do Cavalo. Brasília: MAPA, 2016. 56 p.
Losinho, L.; Alvarenga, M.A. Fatores críticos em programas de transferência de embriões em equinos no Brasil e Argentina. Acta Scientiae Veterinariae, (34): 39-49, 2006.
Oliveira, G.C.; Horber, D.; Quintal, A.P.N.; Vasconcelos, A.B. Efeito de protocolo hormonal e programa de luz artificial na gestação de éguas receptoras de embrião durante o período de transição de primavera. Revista Brasileira de Ciência Veterinária, 27(2):88-92, 2020.
Oliveira Neto, I.V.; Canisso, I.F.; Segabinazzi, L.G.; Dell’Aqua, C.P.F.; Alvarenga, M.A.; Papa, F.O.; Dell’Aqua, J.A. Synchronization of cyclic and cyclic embryo recipient mares with donor mares. Animal Reproduction Science, 190: 1-9, 2018.
Pinto, M.R.; Miragaya, M.H., Burns, P.; Douglas, R.; Neild, D.M. Strategies for increasing Reproductive efficiency in a commercial embryo transfer program with high performance donor mares under training. Journal Equine Veterinary Scientific, 54: 93-97, 2017.
Riera, F.L. Equine embryo transfer. In: Samper, J.C. (ed.) Equine breeding management and artificial insemination. Philadelphia: Saunders Elsevier, 2009. 199 p.
Scarlet, D. et al. Relationship between Clinical Uterine Findings, Therapy, and Fertility in the Mare. Veterinary Sciences, 10(4): 1-11, 2023.
Stout, T.A.E. Equine embryo transfer: review of developing potential. Equine Veterinary Journal, 38(5), 467-478. 2006.
Squires, E.L.; Seidel, G.E. Collection and transfer of equine embryos (Bulletin n.8). Animal Reproduction and Biotechnology Laboratory. Colorado State University, USA, 1995.
Viana, J.H.M. 2018 Statistics of embryo production and transfer in domestic farm animals. Embryo production on a new level: over one million embryos produced in vitro. Embryo Technology Newsletter, 37(4): 7-25, 2019.
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Copyright (c) 2023 Marcos Daniel Neves, Nayara Christina Silva Laquiz, Alessandra Crossara Testa , Amanda Pifano Neto Quintal, André Belico de Vasconcelos
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