Sperm Morphology and Size in Thai Native Crossbred Stallions
Author Information
Author(s): Phetudomsinsuk Kanittha, Sirinarumitr Kaitkanoke, Laikul Aree, Pinyopummin Anuchai
Primary Institution: Kasetsart University
Hypothesis
The study aims to investigate the sperm morphology and normal sperm head morphometry of Thai native crossbred stallions and compare them with purebred stallions.
Conclusion
The study found variability in sperm morphology and head dimensions among Thai native crossbred stallions, with their sperm heads being larger and rounder than those of purebred stallions.
Supporting Evidence
- The mean percentage of morphologically normal sperm was 49.7% for Thai native crossbred stallions and 48.1% for purebred stallions.
- Sperm head dimensions were significantly different between Thai native crossbred and purebred stallions.
- Parameters like perimeter, shape factor 1, and shape factor 3 could help identify individual Thai native crossbred stallions.
Takeaway
This study looked at the sperm of Thai native crossbred horses and found that their sperm heads are bigger and rounder compared to purebred horses.
Methodology
Semen samples were collected monthly from nine stallions, and sperm morphology was examined using microscopy and Computer-Assisted Semen Analysis.
Limitations
The actual fertility or pregnancy rate of the stallions was not tested in this study.
Participant Demographics
Nine clinically healthy stallions aged between 5 and 12 years, including five Thai native crossbred and four purebred stallions.
Statistical Information
P-Value
p>0.05 for normal morphology comparison; p<0.05 for dimensional parameters comparison.
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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