1
|
Fanhani GG, Cavalieri FLB, Andreazzi MA, da Silva CI, Andreazzi KC, Pereira LDC, Emanuelli IP, Dos Santos JMG, Moreski DAB, Colombo AHB, Morotti F, Seneda MM. Progesterone Device Use Improves Ovum Pick-Up Efficiency in Acyclic Donors. J Equine Vet Sci 2023; 131:104933. [PMID: 37776919 DOI: 10.1016/j.jevs.2023.104933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/20/2023] [Accepted: 09/23/2023] [Indexed: 10/02/2023]
Abstract
The aim of this study was to evaluate follicular dynamics and ovum pick-up (OPU) efficacy in untreated mares or mares treated with an intravaginal progesterone (P4) device during seasonal anestrus (acyclic) and during the breeding season (cyclic). Six mares (mean age = 5 years), were recruited into an ovum pick-up scheme that was performed every 14 days with and without the P4 device, during the acyclic and cyclic phases. Aspirations amounted to seven procedures with or without the P4 device during each phase. Five ultrasound assessments were performed at each interval between the OPUs. Data on follicular number and diameter as well as the numbers of recovered and the percentage of recovered oocytes were also collected. The number of follicles from mares in the acyclic phase was higher (P < .005) regardless of the treatment. However, the follicular diameter was smaller for the P4 group (P < .005) from the 2nd to the 5th evaluation post-OPU procedure. The percentage of oocytes recovered during the acyclic phase was higher for mares treated with the P4 device (P < .005). The P4 device resulted in follicles with smaller diameters and facilitated OPU efficacy.
Collapse
Affiliation(s)
- Gabriela Genta Fanhani
- Campus Maringá, Programa de Pós-Graduação em Tecnologias Limpas e Curso de Medicina Veterinária, Universidade Cesumar (UNICESUMAR), Maringá, Parana, Brazil
| | - Fábio Luiz Bim Cavalieri
- Campus Maringá, Programa de Pós-Graduação em Tecnologias Limpas e Curso de Medicina Veterinária, Universidade Cesumar (UNICESUMAR), Maringá, Parana, Brazil
| | - Márcia Aparecida Andreazzi
- Campus Maringá, Programa de Pós-Graduação em Tecnologias Limpas e Curso de Medicina Veterinária, Universidade Cesumar (UNICESUMAR), Maringá, Parana, Brazil
| | - Caroline Isabela da Silva
- Programa de Pós-Graduação em Ciência de Alimentos, Universidade Estadual de Maringá (UEM), Maringá, Parana, Brazil
| | - Kelly Cristina Andreazzi
- Campus Maringá, Programa de Pós-Graduação em Tecnologias Limpas e Curso de Medicina Veterinária, Universidade Cesumar (UNICESUMAR), Maringá, Parana, Brazil
| | - Letícia da Costa Pereira
- Campus Maringá, Programa de Pós-Graduação em Tecnologias Limpas e Curso de Medicina Veterinária, Universidade Cesumar (UNICESUMAR), Maringá, Parana, Brazil
| | - Isabele Picada Emanuelli
- Campus Maringá, Programa de Pós-Graduação em Tecnologias Limpas e Curso de Medicina Veterinária, Universidade Cesumar (UNICESUMAR), Maringá, Parana, Brazil
| | - José Maurício Gonçalves Dos Santos
- Campus Maringá, Programa de Pós-Graduação em Tecnologias Limpas e Curso de Medicina Veterinária, Universidade Cesumar (UNICESUMAR), Maringá, Parana, Brazil
| | - Danieli Aparecida Bobbo Moreski
- Campus Maringá, Programa de Pós-Graduação em Tecnologias Limpas e Curso de Medicina Veterinária, Universidade Cesumar (UNICESUMAR), Maringá, Parana, Brazil
| | - Antonio Hugo Bezerra Colombo
- Campus Maringá, Programa de Pós-Graduação em Tecnologias Limpas e Curso de Medicina Veterinária, Universidade Cesumar (UNICESUMAR), Maringá, Parana, Brazil
| | - Fábio Morotti
- Laboratório de Biotecnologia da Reprodução Animal, Universidade Estadual de Londrina (UEL), Londrina, Parana, Brazil
| | - Marcelo Marcondes Seneda
- Laboratório de Biotecnologia da Reprodução Animal, Universidade Estadual de Londrina (UEL), Londrina, Parana, Brazil.
| |
Collapse
|
2
|
Cuervo-Arango J, Claes AN, Stout TAE. Mare and stallion effects on blastocyst production in a commercial equine ovum pick-up-intracytoplasmic sperm injection program. Reprod Fertil Dev 2020; 31:1894-1903. [PMID: 31634435 DOI: 10.1071/rd19201] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 09/12/2019] [Indexed: 11/23/2022] Open
Abstract
This study retrospectively examined the degree to which success within a commercial ovum pick-up (OPU)-intracytoplasmic sperm injection (ICSI) program varied between individual mares and stallions. Over 2 years, 552 OPU sessions were performed on 323 privately owned warmblood mares. For mares that yielded at least one blastocyst during the first OPU-ICSI cycle, there was a 77% likelihood of success during subsequent attempts; conversely, when the first cycle yielded no blastocyst, the likelihood of failure (no embryo) in subsequent cycles was 62%. In mares subjected to four or more OPU sessions, the mean percentage of blastocysts per injected oocyte was 20.5% (range 1.4-46.7%), whereas the mean number of blastocysts per OPU-ICSI session was 1.67 (0.2-4.2). Age did not differ significantly between mares that yielded good or poor results. The number of recovered oocytes per OPU was positively associated with the likelihood of success (P<0.001). Although there were considerable between-stallion differences, most stallions (14/16) clustered between 15.6% and 26.8% blastocysts per injected oocyte, and the number of blastocysts per OPU (mean 1.4; range 0.2-2.2) was less variable than among mares. In conclusion, although both mare and stallion affect the success of OPU-ICSI, mare identity and the number of oocytes recovered appear to be the most reliable predictors of success.
Collapse
Affiliation(s)
- Juan Cuervo-Arango
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 112, 3584CM Utrecht, Netherlands; and Corresponding author.
| | - Anthony N Claes
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 112, 3584CM Utrecht, Netherlands
| | - Tom A E Stout
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 112, 3584CM Utrecht, Netherlands
| |
Collapse
|
3
|
Clinical Application of in Vitro Embryo Production in the Horse. J Equine Vet Sci 2020; 89:103011. [PMID: 32563449 DOI: 10.1016/j.jevs.2020.103011] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/24/2020] [Accepted: 03/24/2020] [Indexed: 02/06/2023]
Abstract
The first reports of in vitro embryo production (IVEP) by conventional in vitro fertilization and intracytoplasmic sperm injection in horses date respectively from approximately 30 and 25 years ago. However, IVEP has only become established in clinical practice during the last decade. The initial slow uptake of IVEP was largely because the likelihood of success was too low to make it an economically viable means of breeding horses. During the last decade, the balance has shifted, primarily because of significant improvements in the efficiency of recovering immature oocytes from live donor mares (historically <25%; now >50%) and in the successful culture of zygotes to the blastocyst stage in vitro (historically <10%; now >20%). It has also been established that immature oocytes can be "held" at room temperature for at least 24 hours, allowing overnight transport to a laboratory with expertise in IVEP. Moreover, because in vitro-produced embryos can be cryopreserved with no appreciable reduction in viability, they can be shipped and stored until a suitable recipient mare is available for transfer. Most importantly, in an established equine ovum pick-up intracytoplasmic sperm injection (OPU-ICSI) program, blastocyst production rates now exceed 1 per procedure, and posttransfer foaling rates exceed 50%, such that overall efficiency betters that of either embryo flushing or oocyte transfer. Moreover, OPU-ICSI can be performed year round and allows embryo production from mares with severe acquired subfertility and extremely efficient use of scarce or expensive frozen semen. Cumulatively, these factors have stimulated rapid growth in demand for IVEP among sport horse breeders.
Collapse
|