It's used to help the horse 'slide' over a jump and not injure itself. and new zealanders have Kaimanawa Horses and people go on shooting sprees every year because they overpopulate Laminitis also known as founder, is an inflammation and deterioration of the laminae of the hoof.
It has been found however that the grease doesn't really provide any protection and that it interferes with the horses ability to sweat, more and more eventers are now turning away from using the grease. The wall of the hoof separates from rest of the hoof, causing extreme pain and difficulty walking.
the younger horse is more than likely just playing, and when you see them run, they are acting just like foals. if the horses start actually biting with their ears pinned, teeth bared, kicking really hard, at that point you can starting looking into separating them. Valentine Mc Gillycuddy although he died later that night on September 5, 1877. told you that your horse was suffering from a lack of minerals in it's diet. You can breed them and they can do anything male horses can.
If so, the supplement that you mention, (if recommended by your Vet.) would be what I would also recommend, using it for the time he suggested. to double check my horse, if and when they give you a clean bill of health, I'd stop the supplement. While geldings, castrated, or "fixed" male horses that are unable to breed, are the ideal mount for beginners, mares are willing mounts suitable for all abilities and ages.
Elizabeth died in childbirth , Inger was killed by an indians arrow when Hoss was a boy,and Marie died when Little Joe was just 5, when she fell off her horse and died.