Horsetail (Equisetum arvense) - Feed Ingredient

Horsetail is a perennial herb known for its high silica content and is often used in herbal formulations for animals. The plant contains various bioactive compounds, including flavonoids, alkaloids, and phenolic acids, but is primarily noted for its mineral content, especially silica.

In equine nutrition, dried horsetail may be included in herbal blends for its traditional use in supporting connective tissue and bone health. However, its inclusion should be limited and carefully monitored.

Horsetail contains thiaminase, an enzyme that can break down thiamine (vitamin B1) and potentially lead to deficiency if fed in large amounts over time.