I would say no just a longer time to run a feed, so if they would normally put her on a feed and run it at 40 for and hour and a half, a slower rate means she would take 3 hours for the feed.
If they are giving her say 5 cans a day - that times 3 hours would mean she's hooked up for 15 hours instead of 7.5.
Math early on Friday morning...

brain fried. Good luck.