Equine motor neurone disease is a progressive neurological disorder in horses causing muscle weakness, weight loss, and trembling.

Equine Motor Neurone Disease

Alt. Names: EMND, Equine Motor Neuronopathy, Equine Lower Motor Neuron Disease

Seek veterinary advice if you suspect this disease.

Definition of Equine Motor Neurone Disease

Equine motor neuron disease (EMND) is a diffuse neurodegenerative disorder affecting the somatic, lower motor neurons of horses. It affects the nerves that supply the direct neurological input into all muscles resulting in muscles atrophy.
The exact cause is unknown, but vitamin E deficiency is a primary risk factor. Vitamin E levels were significantly lower in affected horses. Some horses have improved after being allowed on pasture and given supplemental vitamin E.

Symptoms of Equine Motor Neurone Disease

  • Tremors
  • Muscle Wasting
  • Excessive Sweating
  • Weight loss
  • Recumbency
  • Abnormal Change in Gait
  • Reduced Performance
  • Difficulty getting up
  • Balance Issues
  • Stiff
  • Weakness
  • Drooping Tail
  • Difficulty Swallowing

More common in

  • United States
  • Quarter Horses
  • Middle-aged Horses

Treatment of Equine Motor Neurone Disease

To date there is no evidence to support the effectiveness of a treatment. For affected horses, treatment involves changing the vitamin E level in the diet.
The natural source of vitamin E for horses is fresh green grass. Horses that do not have adequate access to pasture may require supplementation.
Supplementing with vitamin E (5000 to 8000 IU/day/horse, unassociated to selenium to avoid intoxications) is recommended on the basis of low plasma or tissue concentration, and on the assumption of an oxidative cause to the disease.

Prevention of Equine Motor Neurone Disease

Ensuring that horses receive adequate vitamin E through access to pasture or closely monitored vitamin E supplementation reduces the risk of developing EMND.

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Happie Horse App digitale Gesundheitsakte

Digital health management offers numerous benefits in modern equine healthcare.

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