At Endurance, it's important we can get our horses to eat and drink whenever they have the opportunity.
Using soaked feeds is a great way of covering both bases, and really useful if you have a horse who doesn't drink much, as you can just add extra water to the feed.
Maintaining hydration and good gut motility is important, especially when at a ride. Not only for obvious health reasons, but as hydration and gut motility are part of the vetting. So you could fail the vetting if your horse isn't well hydrated, or has quiet or absent gut sounds.
When horses are working hard, their body will actually draw water from the guts, and this, combined with the blood flow being directed to the muscles, can cause the gut to work less efficiently.
Ensuring there's a good amount of food and water going through the gut is important for maintaining gut health, and preventing the risks of gastric or hind gut ulcers.