Peer-reviewed veterinary case report
Stallion with subfertility and blocked ampullae - what to do?
By Huggins, L et al.·Published in Journal of equine veterinary science·2025·William P. Veterinary Medical Teaching Hospital, United States·View original on PubMed →
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Original publication title: Seminal vesiculitis and blocked ampullae occurring simultaneously in a stallion.
- Species:
- horse
Plain-English summary
A Gypsy Vanner stallion was brought in due to fertility issues and abnormal, thick, grey semen. Tests showed he had seminal vesiculitis (inflammation of the seminal vesicles) and blocked ampullae, which are parts of the reproductive system. The stallion received oral antibiotics and underwent continuous semen collections for five weeks. After treatment, his condition improved, and he was able to successfully breed with two out of five mares, resulting in confirmed pregnancies, although his semen quality remained low.
People also search for: stallion fertility issues · treatment for seminal vesiculitis in horses · blocked ampullae in stallions
Abstract
A Gypsy Vanner stallion presented with a history of subfertility and abnormal dense, grey ejaculate. Reproductive examination including ultrasound, cytology, and bacteriology confirmed the diagnosis of seminal vesiculitis. After evaluation of several ejaculates, bilateral blocked ampullae were confirmed by azoospermia and a low level of alkaline phosphatase (30 IU/L) in the filtered fraction. Continuous semen collections, along with oral antibiotics treatment, were performed at the owner's facility for five weeks. After readmission, a successful collection was obtained with a high concentration and low motility. Seminal vesiculitis persisted, local antibiotic treatment of the seminal vesicles (SV) was initiated using video endoscopy, to improve response to treatment. After completing a total of 7 weeks of oral and local SV treatment, the seminal vesiculitis resolved. Despite persistent low semen quality, the stallion has successfully impregnated 2 out of 5 mares (40 %), with confirmed pregnancies and heartbeats.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/40499696/