Ulcerative duodenitis in foals.

This research article discusses the condition of ulcerative duodenitis in young horses, specifically foals aged between 18 days and 3.5 months. The study focuses on its symptoms, the suspected causes, and the potential connection to non-steroidal anti-inflammatory drugs.

Ulcerative Duodenitis in Foals

The article details the researcher’s observations on seven young horses that suffered from either single or multiple areas of necrotizing duodenitis – a severe inflammation and ulceration of the frontal half of the duodenum, the first part of the small intestine.

• The condition was visibly demarcated from adjacent viable sections of the duodenum.
• All the foals had experienced a perforation of the necrotic wall, which led to acute fibrinous peritonitis, a severe inflammatory response.

Chronic Form of Duodenitis

The researchers further found two foals, aged 28 and 30 days, believed to be suffering from a chronic form of the disease.

• In these instances, the foals had a visibly thickened duodenal wall with large portions of the mucosa replaced by granulated tissue.
• One of them showed additional symptoms of several strictures, or abnormal narrowing, associated with firm adhesions between the duodenal serosa – the outermost layer of the duodenal wall – and adjacent structures. The same foal also had ascending cholangiohepatitis and pancreatitis.

Associated Gastric Ulcers

Eight foals, including some from the above cases, were found to have gastric ulcers, though these were considered less significant than the duodenal lesions.

Etiological Investigation

Despite detailed investigation, the researchers couldn’t identify an etiologic, or causative, agent for the condition. They conducted tests for potential bacterial or viral causes using aerobic and anaerobic bacterial culturing, negative contrast electron microscopy for viruses, and immunofluorescence staining for equine herpesvirus 1, equine adenovirus, or equine coronavirus.

Last Remarks

In the absence of identifiable causative agents, the article concludes with a discussion around the potential involvement of non-steroidal anti-inflammatory drugs in causing the disease, although no definitive link is provided.