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Semen parameters in Macaca mulatta: ejaculates from random and selected monkeys
Abstract:
Semen samples were collected by rectal probe electroejaculation techniques from groups of adult male rhesus monkeys. Mean values for 249 ejaculates from 100 monkeys were a sperm concentration of 419.43 x 10(6)/cm3 with 53.9% of the sperm showing progressive movement. Sperm concentration showed a positive rank correlation coefficient with sperm motility. Significant motility and concentration differences were found among groups. Seasonal differences were noted but were not significant. The study provides data that will aid investigators who are screening animals for studies involving reproductive potential.
Insights
This study analyzed rhesus monkey semen, finding average sperm concentrations of 419.43 x 10(6)/cm3 and 53.9% progressive motility. These findings aid researchers screening animals for reproductive studies.
Area of Science:
- Primate reproductive biology
- Andrology
- Veterinary science
Background:
- Understanding rhesus monkey reproductive parameters is crucial for preclinical research.
- Variability in semen quality can impact study outcomes.
- Establishing baseline data is essential for animal screening.
Purpose of the Study:
- To establish normative semen parameters in adult male rhesus monkeys.
- To investigate correlations between sperm concentration and motility.
- To identify potential group and seasonal variations in semen quality.
Main Methods:
- Semen samples were collected from 100 adult male rhesus monkeys using rectal probe electroejaculation.
- Sperm concentration and progressive motility were quantified for 249 ejaculates.
- Statistical analysis included rank correlation and group comparisons.
Main Results:
- Mean sperm concentration was 419.43 x 10(6)/cm3, with 53.9% progressive motility.
- A positive correlation was observed between sperm concentration and motility.
- Significant differences in motility and concentration were found between groups, but seasonal variations were not significant.
Conclusions:
- The study provides valuable baseline data on rhesus monkey semen parameters.
- Findings support the use of these parameters for screening animals in reproductive studies.
- Sperm concentration and motility are key indicators of reproductive potential in this species.