Methionine is often the third limiting amino acid, and is unique in that it is a sulfur-containing amino acid. Sulfur is critical to hoof quality because the main protein in hooves, keratin, is very high in sulfur.
The sulfur in the keratin forms disulfide bonds which act as strong cross-links binding the fibers in the hoof wall together, and providing the hoof with strength and resilience.
If a horse is deficient in sulfur, these bonds cannot form, which may result in poor hoof growth and weak hooves.
Performance Horse Nutrition
Performance Horse Nutrition® (PHN®) was founded in 2002 by Dr. Stephen Duren. The goal of PHN has always been to advance the “science” of feeding horses, and equally important to disseminate that science to our clients in the simplest, most straightforward means possible. PHN prides itself on having trained Ph.D equine nutritionists that are not only scientists, but also horsemen. We understand how to feed horses and our feeds, feeding recommendations, articles and seminars reflect that understanding. Please refer to our list of services to further clarify what we can do for our clients.