How to Feed Horses Prone to Endocrinopathic Laminitis
An elevation in insulin can stimulate endocrinopathic laminitis in horses. Here are strategies for keeping insulin below the laminitic threshold for ID horses.
This article originally appeared in the Summer 2025 issue of EquiManagement. Sign up herefor a FREE subscription to EquiManagement’s quarterly digital or print magazine and any special issues.Grazing muzzles can result in a 30-45% reduction in pasture consumption for horses with insulin dysregulation. | Adobe Stock
“Given the right environmental factors and genetics, any horse can develop insulin dysfunction (ID),” said Erica Macon, MS, PAS, PhD, of Texas A&M University. During her presentation at the 2024 American Association of Equine Practitioners Convention, she described insulin dysregulation as a collective term that includes the possibility of three elements:
1. Insulin resistance.
2. Resting hyperinsulinemia.
3. Postprandial hyperinsulinemia.
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