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Semen parameters in Macaca mulatta: ejaculates from random and selected monkeys

R M Harrison

    Journal of Medical Primatology
    |January 1, 1980
    PubMed
    Summary
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    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.

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  • 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.