Amino acids are a hot topic in today’s equine nutrition. They are the vital biological building blocks that link together in the horse’s body to create proteins, which form everything from muscle tissue to organ tissue as well as enzymes, hormones and antibodies. “Aside from water, protein is the most abundant molecule in the body,” says Middle Tennessee State University associate professor Holly Spooner, PhD. “All tissue is made from protein. But it is perhaps the most misunderstood essential nutrient.”
Horse owners tend to focus on crude protein, which, she explains, is actually just an estimate of the amount of protein in a feed product based on how much nitrogen is present (since nitrogen is much more abundant in protein than in other nutrients). “But that doesn’t exactly tell the…