Originally Posted by Trinity3205
Changing the hay will not colic a horse unless you are changing to a high powered hay like alfalfa too quickly. You can completely change between different types of grass hays however from one feeding to the next and it will not affect normal horses.
Horses can and do colic on switching from 1 cutting of grass hay to another cutting. You should be able to change her over in less than a week though. It may take her a bit to get used to the new hay and she might not eat as much right away