What substance is essential for building cartilage in horses?

Building cartilage in horses primarily requires substances like glucosamine, chondroitin sulfate, and collagen. Among the options provided, sodium chloride, or table salt, plays a role in maintaining proper fluid balance and is critical for numerous cellular functions, but it does not directly contribute to cartilage formation.

Calcium phosphate, however, is vital for bone health and strength, while magnesium sulfate is important in various metabolic processes. Potassium chloride contributes to cellular functions and electrolyte balance but lacks a direct role in cartilage synthesis.

In the context of cartilage construction, while sodium chloride is essential for maintaining overall health and supporting some biological processes, it does not provide the building blocks needed for cartilage development. The other substances mentioned—such as glucosamine or chondroitin—are not listed among the options but would be more relevant in this context. It's crucial for those studying horse evaluation to focus on how nutrition impacts cartilage health and maintenance, with specific attention paid to the most beneficial supplements for equine athletes.