For the best results in your horse's hooves, diet is paramount. A correct diet will create healthier hoof quality, boost the immune system of the whole horse, prevent thrush & white line disease, and aid with metabolism.

Hay
Horses were designed to eat frequent, small meals throughout the day with a majority of their forage being grass hay (orchard, bermuda, timothy) and limited amounts of alfalfa. Horses will need to eat 1.5%-2% of their body weight in forage daily for their nutrition, calorie intake, and GI health.

Supplementation
As far as supplementation goes, simple is best. Horses need limited yet direct ingredients that start with balancing what is missing in the hay. This includes trace minerals, omega-3 fatty acids, vitamin E, and limited amino acids. Most supplements on the market have a variety of ingredients that are unnecessary, rich, and can be harmful to the horse.

My Farrier's Formula
Most horses will simply need a trace mineral blend such as Vermont Blend, ground flax, Vitamin E oil, and possibly joint protection. The carrier should be hay pellets or cubes. Extra fiber options are: more hay, and flax or beet pulp.

Slow Feeders
Slow feeders are a must-have for horses. My favorite is the Porta Grazer, though I also have seen much success with the Hay Chix Panel Feeder in boarding facilities for ease of use. There is also the Hay Pillow that is great for eating off the ground.