Equine Metabolic Syndrome and Laminitis

Equine metabolic syndrome predisposes horses to laminitis - a painful and debilitating foot condition that is a leading cause of horse euthanasia.

Key Facts

Equine metabolic syndrome (EMS) involves insulin dysregulation and often obesity
Laminitis is inflammation of the sensitive laminae within the hoof that can cause permanent damage
The lamellar tissues connect the pedal bone to the hoof wall - failure causes the bone to rotate or sink
Once the pedal bone penetrates the sole, prognosis becomes very guarded
Spring grass flush is a major trigger due to high non-structural carbohydrates
Native breeds including ponies, donkeys, and Morgans are most susceptible
Dietary management with restricted pasture access is the most important preventive measure
Digital pulses and heat in the feet are early warning signs requiring immediate action

Welfare Considerations

Laminitis causes excruciating pain - horses shift weight repeatedly trying to find a comfortable position and become reluctant to move. Chronic laminitis with pedal bone rotation causes permanent structural changes that require ongoing management. The suffering in acute laminitis episodes is severe and immediate. Many horses are euthanized because chronic laminitis makes adequate pain control impossible or because owners cannot maintain the intensive management required. Prevention through diet management is far preferable to treating established laminitis. Horse owners should understand EMS risk factors and act before laminitis develops.

What You Can Do

Restrict pasture access for susceptible horses and ponies, particularly in spring
Feed soaked hay to reduce non-structural carbohydrate intake for at-risk animals
Monitor weight and body condition score regularly in all horses
Learn the early signs of laminitis and seek veterinary care immediately
Work with your farrier and vet on a preventive management plan for high-risk animals