Repeatability of the superovulatory response in embryo production in vivo with a modified pFSH protocol in Australian Merino sheep

Authors

  • Marcela Gómez-Ceruti Universidad Santo Tomás, Centro de Innovación de Ovinos para el Secano, Talca, Chile https://orcid.org/0000-0001-9714-5342
  • Carlos Mariano Serrano Universidad Santo Tomás, Centro de Innovación de Ovinos para el Secano, Talca, Chile
  • Giordano Catenacci A. Universidad Santo Tomás, Centro de Innovación de Ovinos para el Secano, Talca, Chile https://orcid.org/0000-0002-1054-9203
  • Lina Maria Correa E. Universidad Santo Tomás, Centro de Innovación de Ovinos para el Secano, Talca, Chile https://orcid.org/0000-0001-9099-1175
  • Claudia Letelier-Velasquez Universidad Austral, Facultad de Veterinaria, Instituto de Ciencia Animal, Valdivia, Chile

DOI:

https://doi.org/10.15381/rivep.v34i6.24604

Keywords:

sheep, superovulation, FSH, embryos, surgical recovery

Abstract

The study evaluated the repeatability of the superovulatory response in 12 Australian Merino ewes during the breeding season in one (G1), three (G2), and four (G3) consecutive years. A modified protocol was used based on 200 mg pFSH in eight decreasing doses (12-h intervals) and supportive strategies such as changing the CIDR at day 7, spraying the horns with heparinized saline during the procedure, and use of Flunixin Meglumine. No significant differences were found in the total number of structures recovered during the years of application of the superovulation protocol (G1=8±2, G2=18±3, G3=19±4; p>0.05). High repeatability was observed, both for the total number of embryos and for the number of transferable embryos in G2 and G3. Superovulatory treatment for 3 and 4 successive years did not affect the efficacy of embryo retrieval.

Downloads

Download data is not yet available.

Downloads

Published

2023-12-18

Issue

Vol. 34 No. 6 (2023)

Section

Artículos Primarios

License

Copyright (c) 2023 Marcela Gómez-Ceruti, Carlos Mariano Serrano, Giordano Catenacci A., Lina Maria Correa E., Claudia Letelier-Velasquez

Creative Commons License

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

AUTHORS RETAIN THEIR RIGHTS:

a. Authors retain their trade mark rights and patent, and also on any process or procedure described in the article.

b. Authors retain their right to share, copy, distribute, perform and publicly communicate their article (eg, to place their article in an institutional repository or publish it in a book), with an acknowledgment of its initial publication in the Revista de Investigaciones Veterinarias del Perú (RIVEP).

c. Authors retain theirs right to make a subsequent publication of their work, to use the article or any part thereof (eg a compilation of his papers, lecture notes, thesis, or a book), always indicating the source of publication (the originator of the work, journal, volume, number and date).

How to Cite

Gómez-Ceruti, M., Serrano, C. M., Catenacci A., G., Correa E., L. M., & Letelier-Velasquez, C. (2023). Repeatability of the superovulatory response in embryo production in vivo with a modified pFSH protocol in Australian Merino sheep. Revista De Investigaciones Veterinarias Del Perú, 34(6), e24604. https://doi.org/10.15381/rivep.v34i6.24604