Equine Hypothyroidism Symptoms

Equine hypothyroidism is a medical condition caused by the under-activity of the thyroid gland, which can lead to deficient levels of the thyroxin hormone. This hormone helps a horse regulate her body temperature, reproduce, use protein, and produce red blood cells. While this health condition is not life-threatening, it can affect the normal development of foals. Learn the common equine hypothyroidism symptoms.

  1. Low Energy

    • The most common equine hypothyroidism symptoms include lack of energy, lethargy and fatigue.

    Loss of Appetite

    • Equines suffering from hypothyroidism typically lose their appetites and might lose a lot of weight in a short amount of time. Some horses, however, suddenly gain a lot of weight.

    Coat Changes

    • Another symptom of equine hypothyroidism is a change in the horse's coat. Most horses with this condition develop a dull, coarse coat and might shed later than usual.

    Anemia

    • Horses suffering from equine hypothyroidism typically have a low red blood cell count and become anemic.

    Causes

    • Equine hypothyroidism is typically caused by either too much or too little iodine. This condition can also be triggered by thyroid glandular cancer or thyroid inflammation.

    Diagnosis and Treatment

    • Hypothyroidism in horses is generally diagnosed with a blood sample used to measure thyroid hormones. This condition is usually treated by adding thyroid replacement hormones to the horse's food.