If you need to feed your horses grain outside. this can be a safe alternative. notice the solid dividers between their heads: its to prevent food aggression and the need to defend their food from others.
ARDENNAIS Thought to descend from the prehistoric Solutré horse, the Ardennais is one of the most ancient horse breeds in Europe. The use of this breed dates back to Ancient Rome. First bred for the purposes of war, then agriculture, the Ardennais.