Originally Posted by Saddlebag
PS, don't feed raw flax seed. It contains arsenates, in the arsenic family. Boiling it destroys that property.
This is a common beleif, but one that I've learned from nutritionists is not a worry - a horse would need to eat a LOT of linseed for it to be affected by the toxins, and just cracking the seeds does reduce that a bit. In addition, cooking the seeds(or any processing) also destroys a lot of the omega 3s very quickly. Therefore I feed linseed/flax raw & grind whole seeds per feed.