Horses that do a lot of hard work, need an increase in their potassium, electrolytes and water. They also have an increase in oxygen use. And of course they will need an increase in their daily calorie intake.
to swat flies(as horses do)
horses need plenty of shots. Rhino Flu Worms ask your local vet
Probably the only time you need to put grease horses hooves is when the bolts don't come out. But that's only give there rusted or they won't come out
Horses dont need to be groomed every day and you dont need to groom there body that often at all unless you want to keep your horse looking very tidy but its just important you brush all the mud off your horses feet so the dont get mud fever.
food and hay/haylage =)
Food and care. And usually a horse will want to take a little rest.
Frequently exercised horses need extra minerals and grain.
calories and salt
Salt
horses that are frequently exercised need feed with higher fiber and less suger,
Extra food for energy.
they need lots jumps and they need lots of troting polls
Protein requirements do increase slightly with training and exercise but this is insignificant in comparison to the protein needs of a young, growing horse, or a lactating broodmare.
if they are walking on a rough terrain then they will need horseshoes. these can be put on by a farrier.
increased fat
on howrse the answer is increased protein and carb.
Oats and grains are high energy foods, great for horses that get frequent exercize.