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Currin L, Baldassarre H, de Macedo MP, Glanzner WG, Gutierrez K, Lazaris K, Guay V, Herrera MEC, da Silva Z, Brown C, Joron E, Herron R, Bordignon V. Factors Affecting the Efficiency of In Vitro Embryo Production in Prepubertal Mediterranean Water Buffalo. Animals (Basel) 2022; 12:ani12243549. [PMID: 36552466 PMCID: PMC9774791 DOI: 10.3390/ani12243549] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/05/2022] [Accepted: 12/10/2022] [Indexed: 12/23/2022] Open
Abstract
Embryos from prepubertal water buffalo can be produced using laparoscopic ovum pickup (LOPU) and in vitro embryo production (IVEP). However, to date, it is unclear what factors and environmental conditions can affect LOPU-IVEP efficiency in prepubertal animals, especially buffalo. In this study, we explored the impact of season, age and individual variation among female donor animals, as well as the effect of the sire used for in vitro fertilization. Donor animals between 2 and 6 months of age were stimulated using gonadotropins prior to LOPU, which was performed at two-week intervals. Following in vitro maturation and fertilization, the resulting embryos were then cultured to the blastocyst stage until they were either vitrified or transferred into recipient animals. The number of follicles available for aspiration and embryo development rates was stable throughout the year. As animals became older, there was a slight trend for fewer COCs recovered from LOPU and better embryo development. There was a large individual variation in both ovarian response and the developmental competence of oocytes among donors. The bull used for fertilization also had a significant impact on embryo development. Upon embryo transfer, pregnancy rates were not affected by the number of embryos transferred per recipient. The best pregnancy rates were achieved when transferring blastocysts, compared to compact morula or hatched blastocysts. Finally, vitrification had no effect on pregnancy rate compared to fresh embryos.
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Affiliation(s)
- Luke Currin
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada
| | - Hernan Baldassarre
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada
| | | | - Werner Giehl Glanzner
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada
| | - Karina Gutierrez
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada
| | - Katerina Lazaris
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada
| | - Vanessa Guay
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada
| | | | - Zigomar da Silva
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada
- Laboratory of Biotechnology and Animal Reproduction—BioRep, Federal University of Santa Maria, Santa Maria 97105-900, RS, Brazil
| | - Caitlin Brown
- Ontario Water Buffalo Company, Stirling, ON K0K 3E0, Canada
| | - Erin Joron
- Ontario Water Buffalo Company, Stirling, ON K0K 3E0, Canada
| | - Ron Herron
- Ontario Water Buffalo Company, Stirling, ON K0K 3E0, Canada
| | - Vilceu Bordignon
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada
- Correspondence: ; Tel.: +1-(514)-398-7793
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Almeida J, Neves BP, Brito MF, Freitas RF, Lacerda LG, Grapiuna LS, Haddad JP, Auler PA, Henry M. Impact of in vitro fertilization by refrigerated versus frozen buffalo semen on developmental competence of buffalo embryos. Anim Reprod 2020; 17:e20200033. [PMID: 33936290 PMCID: PMC8081381 DOI: 10.1590/1984-3143-ar2020-0033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The objective of this study was to evaluate the fertility of buffalo semen for in vitro embryo production (IVEP) by comparing the effectiveness of refrigerated versus frozen semen. Three OPU sessions were held at 30-day intervals. For oocyte fertilization three buffalo bulls were used, one per session. At each OPU-IVEP session, one ejaculate was collected and divided into two equal aliquots. Each aliquot was either refrigerated at 5ºC/24 hours or frozen. A TRIS extender containing 10% low density lipoproteins, 0.5% lecithin and 10 mM acetylcysteine was used adding 7% glycerol for freezing. Sperm motility/kinetic was evaluated by CASA and sperm membrane integrity by the hypoosmotic swelling test. The evaluations were performed at 0 h (post final dilution at 37ºC), at 4 and 24 hs post-incubation at 5ºC and post-thaw. At 24 hs incubation and immediately post thaw sperm cells were used for in vitro fertilization of buffalo oocytes equally distributed between both groups. Cleavage rates and embryo development were followed. The embryo/matured and embryo/cultured rates were 25.4 x 14.0% and 29.4 x 18.5% (P<0.05), for chilled and frozen semen, respectively. It is concluded that cooled semen can be used for in vitro embryo production in buffalo and that a better efficiency may be expected for cooled compared to frozen semen.
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Affiliation(s)
- Jaci Almeida
- Departamento de Clínica e Cirurgia Veterinária, Escola de Veterinária, Universidade Federal de Minas Gerais, Campus Pampulha, Belo Horizonte, MG, Brasil
| | - Beatriz Parzewski Neves
- Departamento de Clínica e Cirurgia Veterinária, Escola de Veterinária, Universidade Federal de Minas Gerais, Campus Pampulha, Belo Horizonte, MG, Brasil
| | - Mayara Ferreira Brito
- Departamento de Clínica e Cirurgia Veterinária, Escola de Veterinária, Universidade Federal de Minas Gerais, Campus Pampulha, Belo Horizonte, MG, Brasil
| | | | | | | | - João Paulo Haddad
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Campus Pampulha, Belo Horizonte, MG, Brasil
| | - Patrícia Alencar Auler
- Departamento de Clínica e Cirurgia Veterinária, Escola de Veterinária, Universidade Federal de Minas Gerais, Campus Pampulha, Belo Horizonte, MG, Brasil
| | - Marc Henry
- Departamento de Clínica e Cirurgia Veterinária, Escola de Veterinária, Universidade Federal de Minas Gerais, Campus Pampulha, Belo Horizonte, MG, Brasil
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