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Related Experiment Videos

Electroejaculation of the coyote.

M L Bruss1, J S Green, J N Stellflug

  • 1U. S. Department of Agriculture, ARS U. S. Sheep Experiment StationDubois, ID., 83423 USA.

Theriogenology
|July 1, 1983
PubMed
Summary

Researchers collected semen from 40 male coyotes using electroejaculation. An effective method involved a two-ring rectal probe and 18 Vrms at 1000 Hz, yielding satisfactory samples from 11 of 15 animals.

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Area of Science:

  • Veterinary Science
  • Reproductive Biology
  • Wildlife Management

Background:

  • Semen collection is crucial for wildlife conservation and reproductive studies.
  • Electroejaculation is a common technique for obtaining semen from male animals.
  • Optimizing electroejaculation protocols is essential for maximizing sample yield and quality in species like coyotes.

Purpose of the Study:

  • To evaluate the effectiveness of different electroejaculators for semen collection in adult male coyotes.
  • To determine the optimal electrical parameters for successful semen retrieval.
  • To assess the quality and volume of semen samples obtained.

Main Methods:

  • Semen was collected from 40 adult male coyotes using two different electroejaculators.
  • One apparatus featured a two-ring rectal probe.
  • Electrical parameters tested included AC voltage (18 Vrms) and frequency (1000 Hz).

Main Results:

  • The electroejaculator with a two-ring rectal probe and 18 Vrms at 1000 Hz was most effective.
  • This method yielded satisfactory semen samples from 11 out of 15 coyotes.
  • The collected semen averaged 0.9 ml in volume and contained 70 million spermatozoa per ml.

Conclusions:

  • Electroejaculation with specific parameters is a viable method for coyote semen collection.
  • The optimized technique can provide valuable samples for research and conservation efforts.
  • Further studies may refine protocols for even higher success rates.

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