Hi Raspberry Swirl,
The best prevention of G.I. Stasis is grooming, high fiber (grass hay)in their diet, and water. Very little sugar as you know it'snot good for the G.I. system. You want to keep their systemmoving. If the rabbit stops eating, and doesn'thave many droppings or they're very small, it could be a sign of therabbit having a problem with it's G.I. tract. Simethicone canhelp relieve gas, and unsweetened Pedialyte can provide theelectrolytes to rehydrate the rabbit.
I like to have a needless syringe on hand at all times in case you mustforce feed the rabbit water. Also, I don't think anyoneshould be without a tube of NutriCal. Not only does it keepthe nutrients in the rabbit that you need, it boosts the immune system,and can help with an appetite. Even just giving NutriCal asthe bunny ages is a good idea.
If you do notice a slowdown of the system, some folks give papaya orfresh pineapple to help break the hair down, that said, you don't wantto overdue on this as it can cause a bacteria in the G.I.system. Powdered enzymes, like bromelain, would be thealternative.
-Carolyn