Current methods for stallion semen cryopreservation: a survey.
Abstract: Various factors affect the success of AI with frozen-thawed semen in horses. Stallion variability is thought to be one of the major factors, but semen processing and evaluation techniques, thawing protocols, packaging systems and timing of insemination are far from standardized among laboratories. Our objective was to survey current methods for stallion semen cryopreservation used commercially around the world. From the answers to the questions in the survey, we attempted to provide an overview of procedures that are standard as well as those that are used by only few laboratories and to review critically the efficacy of these procedures. Twenty-five questionnaires were sent to individuals or laboratories in 14 countries that were i.v. involved in freezing stallion semen for commercial purposes. Questionnaires were returned from 10/14 countries with 21/25 (84%) of the addresses responding. From the responses, it became evident that most of prefreezing, freezing and thawing and post-thawing processing procedures were far from standardized. The great variety of procedures makes it difficult to accept any of them as reliable. In order to increase the credibility of AI technology in the horse, laboratories need to standardize processing methods as well as the record-keeping systems. In addition, it is evident that no group of research mares is large enough to provide meaningful fertility data. It is therefore imperative to have multicentered collaborative studies to record and disseminate information about methods and the corresponding fertility rate. to gain valuable information and be able to compare different protocols.
Publication Date: 2000-03-25 PubMed ID: 10732098DOI: 10.1016/s0093-691x(98)00039-9Google Scholar: Lookup
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- Journal Article
Summary
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The research article surveys various global methods for cryopreservation of stallion semen in order to highlight the lack of standardization and the need for collaborative studies to increase the reliability of artificial insemination technology in horses.
Objective and Methodology
- The main objective of this research was to survey and examine the current global methods used for stallion semen cryopreservation. The focus was on commercially used procedures, intending to create an overview of standard practices and those used less frequently.
- The researchers sent out 25 questionnaires to individuals or labs operating in 14 countries that actively freeze stallion semen for commercial purposes.
Findings
- From 14 countries, questionnaires were returned by 10 countries, marking an 84% response rate.
- The outcomes showed that most prefereezing, freezing, thawing, and post-thawing processes were far from standardized. There existed a significant variety of procedures, which posed difficulties in accepting any of them as reliably effective.
Critical Analysis and Future Directions
- The lack of standardization in the techniques for stallion semen cryopreservation points to the need for establishing more uniform practices in the laboratories. This would help enhance the trustworthiness and credibility of artificial insemination technology in the equine industry.
- Besides standardizing processes, the researchers stress the need for improved record-keeping systems in labs. Having detailed and organized records can facilitate more effective analysis and comparisons of different methods and their results.
- Given the limitations in current research methodology – the fact that no research group with mares is large enough to provide substantial fertility data – the study calls for more extensive multicentered collaborative research. Such cooperation would generate more substantial and meaningful fertility data and provide a more robust basis for standardized practices.
Cite This Article
APA
Samper JC, Morris CA.
(2000).
Current methods for stallion semen cryopreservation: a survey.
Theriogenology, 49(5), 895-903.
https://doi.org/10.1016/s0093-691x(98)00039-9 Publication
Researcher Affiliations
- JCS Veterinary Reproductive Services, Abbotsford, B.C., Canada.
MeSH Terms
- Animals
- Cryopreservation / methods
- Cryopreservation / standards
- Cryopreservation / veterinary
- Horses
- Insemination, Artificial / methods
- Insemination, Artificial / veterinary
- Male
- Semen Preservation / methods
- Semen Preservation / standards
- Semen Preservation / veterinary
- Surveys and Questionnaires
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