Definition

Manganese (Mn) is an essential trace mineral found in the horse’s body, with the highest concentration occurring in the liver. It plays a vital role in several physiological processes. 

Importance

• Enzyme Activation: Manganese stimulates enzymes involved in bone and fat metabolism.
• Reproductive Health: It is essential for proper ovarian function in mares.
• Cartilage Formation: Manganese is required for the production of cartilage, supporting joint health and skeletal development.

Deficiency symptoms

Although manganese deficiencies are rare in horses, they can have serious consequences when they occur:

• Enlarged hocks and impaired growth plate development
• Lameness and poor coordination in young horses

Severe cases may lead to:

• Bone breakdown in the womb
• Increased risk of foal rejection
• Irregular estrous cycles in mares

Occurrence of deficiency

Shortages of manganese are uncommon in equine diets, but monitoring levels is important for breeding mares and growing horses to prevent skeletal and reproductive issues.

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