Related Experiment Videos
Retrograde ejaculation in a stallion.
1Department of Large Animal Medicine and Surgery, College of Veterinary Medicine, Texas A&M University, College Station 77843-4475, USA.
Journal of the American Veterinary Medical Association
|March 7, 2001
Summary
Retrograde ejaculation in stallions occurs when semen enters the bladder instead of exiting the penis. Diagnosing this condition involves checking for sperm in urine post-ejaculation.
Area of Science:
- Veterinary Medicine
- Reproductive Biology
Background:
- Retrograde ejaculation is a condition where semen travels into the urinary bladder during orgasm.
- This can lead to infertility in stallions, presenting as absent or low-volume ejaculate.
- Diagnosis can be challenging due to the subtle nature of the condition.
Purpose of the Study:
- To diagnose retrograde ejaculation in a 10-year-old Arabian stallion.
- To evaluate a diagnostic method for identifying retrograde ejaculation in stallions.
- To assess the efficacy of medical treatment for retrograde ejaculation.
Main Methods:
- Behavioral observation of ejaculation.
- Semen collection via artificial vagina.
- Urinalysis for sperm presence and concentration post-ejaculation.
- Bladder catheterization for urine sample collection.
- Endoscopic examination of the reproductive and urinary tracts.
Main Results:
- Artificial vagina collection yielded no semen despite behavioral signs of ejaculation.
- Urinalysis revealed high concentrations of spermatozoa in the bladder post-ejaculation.
- Endoscopic examination showed no anatomical abnormalities.
- Imipramine hydrochloride treatment provided temporary improvement but was not curative.
Conclusions:
- Bladder catheterization and urinalysis are simple, effective diagnostic tools for retrograde ejaculation in stallions.
- Retrograde ejaculation can occur in stallions without apparent anatomical defects.
- Medical management may offer temporary relief, but other interventions may be necessary.