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Hasler JF. Looking back at five decades of embryo technology in practice. Reprod Fertil Dev 2023; 36:1-15. [PMID: 38064185 DOI: 10.1071/rd23120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2023] Open
Abstract
This paper covers developments from International Embryo Technology Society (IETS) meetings over the past 50years. The IETS was officially 'born' at a meeting in Denver, Colorado on Sunday 26 May 1974. There have been 51 IETS meetings (the first was in May 1974), and the first conference at which papers were presented was in 1975. The name of the IETS was changed from International Embryo Transfer Society to International Embryo Technology Society in 2016. The annual IETS conferences are held once a year in January. Embryo technology advanced from the laborious and slow techniques of surgical recovery and transfer of bovine embryos to non-surgical recovery and transfer in many species. Cryopreservation of embryos was initially a slow process that met with only moderate technical success before the development of technology that resulted in high embryo survival rates. The polymerase chain reaction was used to determine the sex of embryos following laminar flow cytology, which came into use to separate X- and Y-bearing spermatozoa. IVF has grown to become widely used, and several factors make it more useful than superovulation and embryo recovery/transfer. Perhaps the most important tool of all was the system that allowed the genetic 'mapping' of the genomic sequence of Bos taurus cattle. Charting key DNA differences by scientists, 'haplotypes' are now used routinely to identify animals with desirable traits of economic importance, discover new genetic disorders, and track carrier status of genotyped animals. Future technology is discussed.
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Affiliation(s)
- John F Hasler
- Vetoquinol USA, Inc., 4250 N. Sylvania Ave, Fort Worth, TX 76137, USA
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Lonergan P, Beltman M, Butler ST, Crowe MA, Evans ACO, Fair T, Fair S, Forde N, Gasparrini B, Kenny DA, Miyamoto A, Sánchez JM. Editorial: Recent scientific advances in reproduction and fertility in ruminants: an overview of the 11th International Ruminant Reproduction Symposium, Galway, Ireland, 2023. Animal 2023; 17 Suppl 1:100903. [PMID: 37567677 DOI: 10.1016/j.animal.2023.100903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 06/29/2023] [Indexed: 08/13/2023] Open
Affiliation(s)
- P Lonergan
- School of Agriculture and Food Science, University College Dublin, Dublin, Ireland.
| | - M Beltman
- School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - S T Butler
- Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland
| | - M A Crowe
- School of Veterinary Medicine, University College Dublin, Dublin, Ireland
| | - A C O Evans
- School of Agriculture and Food Science, University College Dublin, Dublin, Ireland
| | - T Fair
- School of Agriculture and Food Science, University College Dublin, Dublin, Ireland
| | - S Fair
- Department of Biological Sciences, Faculty of Science and Engineering, University of Limerick, Ireland
| | - N Forde
- Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - B Gasparrini
- Department of Veterinary Medicine and Animal Production, University of Naples Federico 13 II, Naples, Italy
| | - D A Kenny
- Teagasc, Animal and Grassland Research and Innovation Centre, Grange, Dunsany, Co. Meath, Ireland
| | - A Miyamoto
- Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - J M Sánchez
- Andalusian Institute of Agriculture and Fisheries Research and Training (IFAPA), Hinojosa del Duque, Córdoba, Spain
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