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Published on: July 12, 2017
Relationship between stallion sperm motility and viability as detected by two fluorescence staining techniques using
C C Love1, J A Thompson, S P Brinsko
1Department of Physiology and Pharmacology, Texas A&M University, College of Veterinary Medicine, College Station, TX 77843-4475, USA. clove@cvm.tamu.edu
Theriogenology
|August 26, 2003
Summary
Accurate sperm viability assessment is crucial. Two fluorescent staining methods reliably predict sperm motility, even after storage or simulated death.
Area of Science:
- Animal reproduction
- Spermatozoa physiology
- Fluorescence microscopy
Background:
- Sperm motility and viability are key indicators of male fertility.
- Accurate assessment of these parameters is essential for reproductive success.
- Existing methods may require validation under various conditions.
Purpose of the Study:
- To evaluate the relationship between sperm motility and viability using two distinct fluorescent staining techniques.
- To assess the impact of storage time and simulated non-viability on these parameters.
- To validate the predictive accuracy of the staining methods.
Main Methods:
- Fresh extended semen was used, with varying concentrations of dead sperm added.
- Two protocols involving SYBR-14 and propidium iodide (PI) were employed.
- A second protocol additionally included the mitochondrial probe JC-1.
- Semen was analyzed immediately and after 24 hours of storage at 5°C.
Main Results:
- A strong correlation (r = 0.98) was observed between total sperm motility and percent viable sperm across both protocols.
- Storage time and the percentage of nonviable sperm significantly affected both motility and viability (P<0.0001).
- The actual measured viability matched expected values for all treatment and time points.
Conclusions:
- Fluorescent staining techniques, including those with JC-1, accurately predict sperm motility.
- These methods are reliable for assessing sperm viability in fresh and stored semen, even with simulated cell death.
- The findings support the use of these techniques for robust sperm quality evaluation.
