Go to rabbit.org that will give you a lot of information on everything you need to know about rabbits. I wouldn't give my rabbit dry bread, not much nutrition. 90% of a rabbits diet is hay, (not alfalfa)they should have that in unlimited amounts, dark leafy veggies in controlled amounts, and very little pellets.

Grains are not the best thing to feed rabbits and rabbits shouldn't be eating any people food. They need raw food, not processed or cooked food. It is very easy for rabbits to get too fat from sweet, starchy or fatty things. A rabbit should only be fed plenty of hay, possibly a few pellets (2-4 tablespoons a day for average rabbits) and 2 cups of veggies per every 6 lbs of body weight. Select at least three kinds of vegetables daily. A variety is necessary in order to obtain the necessary nutrients, with one each day that contains Vitamin A, indicated by an *. Add one vegetable to the diet at a time. Eliminate if it causes soft stools or diarrhea. Alfalfa, radish & clover sprouts Basil Beet greens (tops)* Bok choy Broccoli (mostly leaves/stems)* Brussels sprouts Carrot & carrot tops* Celery Cilantro Clover Collard greens* Dandelion greens and flowers (no pesticides)* Endive* Escarole Green peppers Kale (!)* Mint Mustard greens* Parsley* Pea pods (the flat edible kind)* Peppermint leaves Raddichio Radish tops Raspberry leaves Romaine lettuce (no iceberg or light colored leaf)* Spinach (!)* Watercress* Wheat grass (!)=Use sparingly. High in either oxalates or goitrogens and may be toxic in accumulated quantities over a period of time