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Related Experiment Videos

Xylazine-induced ex copula ejaculation in stallions.

S M McDonnell1, C C Love

  • 1University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA 19348, USA.

Theriogenology
|July 1, 1991
PubMed
Summary

Xylazine hydrochloride can induce ejaculation in stallions with reproductive issues. Sexual stimulation significantly increases ejaculation success rates when using xylazine for stallions with ejaculatory dysfunction.

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Area of Science:

  • Veterinary Pharmacology
  • Animal Reproduction

Background:

  • Pharmacological interventions are explored for stallions experiencing ejaculatory dysfunction.
  • Alpha-adrenergic agonists are investigated for their potential to induce ejaculation.

Purpose of the Study:

  • To evaluate the efficacy of xylazine hydrochloride in inducing ejaculation in stallions.
  • To determine the effect of sexual prestimulation on xylazine-induced ejaculation.

Main Methods:

  • Twenty-eight stallions were treated with xylazine hydrochloride (0.3 mg/lb, i.v.) or a saline control.
  • Treatments were administered with and without preliminary sexual stimulation (5-10 minutes).
  • Ejaculatory response was recorded, and ejaculates were collected and assessed.

Main Results:

  • Ejaculation occurred in 27% of xylazine trials (15/56).
  • Sexual prestimulation significantly increased ejaculation rates (39% with stimulation vs. 14% without).
  • Xylazine-induced ejaculates were comparable to those obtained via artificial vagina.

Conclusions:

  • Xylazine hydrochloride is a viable pharmacological agent for inducing ejaculation in stallions.
  • Combining xylazine treatment with sexual stimulation enhances ejaculatory response in stallions.
  • This approach offers a potential method for managing ejaculatory dysfunction in stallions.

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