Which mineral is involved in the synthesis of enzymes and is crucial for a horse's metabolism?

Manganese plays a vital role in the synthesis of several key enzymes and is essential for various metabolic processes in horses. It acts as a cofactor for enzymes involved in the metabolism of carbohydrates, amino acids, and the synthesis of fatty acids and cholesterol. This mineral is particularly important for the formation of connective tissues, as well as in the functioning of the antioxidant enzyme superoxide dismutase, which protects cells from oxidative stress.

While other minerals mentioned also contribute to horse health, they do so in different capacities. Copper, for example, is significant for iron metabolism and the formation of red blood cells but does not primarily focus on enzyme synthesis. Iodine plays a critical role in thyroid function and metabolism regulation, and iron is more associated with hemoglobin formation and oxygen transport in the blood. Manganese is thus uniquely positioned as a crucial element specifically in enzyme production and metabolism, making it the best answer in this context.