RE: taking horses to colorado from illinois
very few people other than guides pack in hay (but if you do, it MUST be certified weed free)
most of us pack in cubed hay or something like it...but word of caution here...start introducing it slowly to the horses a week or two before...Horses have werid and VERY sensitive digestive systems...last thing you want is a horse to founder in the back country...
for us, we usually pack in about 4-6 critters...and then pack in about 2-3 bags (50lbs.) of hay cubes...and that lasts us about 5-6 days...which is usually the time frame to get first critter, adn then pack in more food and garbage out...
we spend about 1-2 hours a day letting the hroses eat off hi line...so they get plenty of grass while in back country...
if you dont take care of them, they cant take care of you...