Ground Flax seed or hole flax seed, witch is easier for the horse to digest?

I feed my horse hole grains and flax seed is one of the grains. The last time I bought Flax they only had ground so I bought it, and some one told me that is easier for the horse to digest it. Is that true?? Really witch one is easier for the horse to digest.

I always ground my Flax when I fed it to Sky. But I am not sure if they can eat it whole or not.

Unless brought to the boil and soaked, the horse digests very little. Neither do we as the hard seeds are inclined to pass through.

Yes, they can eat hole. I just know soaking hole flax is bad for them because there is a chemical in the hole flax so when you soak it, it brings them together.

It's whole not hole.

Good info here - Flax Seed

I feed it whole.
Have always fed it whole to all my farm animals.
My animals are by far the shiniest and sleekest around I get a lot of compliments. Many people are amazed that an animal can shine that much yet live an unpampered life, especially my goats. Show goat people shave and bathe their goats all the time and still can't get theirs to look as good as mine who have never seen a pair of clippers or a bath.

My buckskin (not a typically shiny horse) looks like liquid gold. He does not get groomed much at all.
Yes, some does come through in the manures, but those are snatched up by my chickens, and yes... they are very shiny too.

Just a tangent: Flax Seed OIL is easiest for digestion in horses and people. I was reading into Omega supplements (chia, algae and fish based, flax), and talked with a nutritionist at Kentucky Equine Research.
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I like hole foods; donuts, crullers, bagels, etc.

I feed my horse whole flax seed because I prepare a week's worth of grain at a time for the feeders at my barn to give to him, and flax seed starts losing its nutritional value very quickly after being ground.

If you can grind it fresh every time you feed it (or buy stabilized ground) then that might be a better way to go, but after reading up on it a bit, I decided that he was probably getting more out of the whole seeds than week-old un-stabilized ground.

When you feed whole, they will absorb the nutrients from the seed through the hull, but you will still see whole seeds in the manure. Some people think this means that nothing is getting absorbed at all. I don't think that's true, though I can certainly see how they might be able to extract more out of freshly ground flax seed.