by Sandi Ackerman. .A rabbit's diet should be made up of good quality pellets, fresh hay, (alfalfa, timothy or oat), water, and fresh vegetables. Anything beyond that is a treat and should be given in limited quantities. Pellets should be fresh, and should be relatively high in fiber (18% minimum fiber).
Supplement. In scientific experiments, the use of controls allows to study one variable or factor at a time. It is, however, important that both the control and other (experimental) group(s) are exposed to the same conditions apart from the one variable under study.
Control Experiment, by example. Control experiment is a parallel (simultaneous) experiment in which you do not change any thing in order to show that changes in your independent variable are not caused by an unknown phenomena, but they are a response to the changes in the independent variable. Related topics: How to select a project?