There's a lot of info in the Resource Center:
http://rabbitsonline.net/view_topic.php?id=12040&forum_id=10
Here's someexcerpts from one of the articles:
http://www.bio.miami.edu/hare/opcare.html
Post surgical Care
1. A neuter and (especially) a spay will make your bunny sore for a day or two. Many experienced vets routinely administer analgesics (e.g., Banamine (flunixin meglumine) )after the surgery, just to keep the bunnies comfortable and to encourage them to eat as soon as possible.
2. Under normal circumstances, rabbits do not require post-surgical antibiotics.
3. Keep your rabbit quiet for a few days after surgery, but do try to maintain normal feeding and bonding times. There is no reason to separate bonded pairs or groups as long as the bunnies interact calmly. Adhesions usually will begin forming within 24 hours.
If your male bunny seems very sore after his neuter, a sitzbath in a weak solution of betadine and lukewarm water (about 1 tablespoon of betadine in four cups of water) can be very soothing. Be sure to gently check the sutures for a day or two after surgery to be sure the bunny isn't chewing them, and to check for unusual redness, swelling or signs of infection. If you see any sign of problems, the bunny should be taken back to the vet immediately.
4. Watch to be sure that your bunny does not chew out the sutures! Many vets use subcuticular (under the skin) sutures that cannot be chewed out, and may even put a line of surgical glue over the incision for extra strength. You might ask your vet about this before your bunny has his surgery. In most cases, an E-collar is not necessary for a rabbit, and may cause more stress than it is worth, except in extreme suture-chewing cases. If your bunny does end up wearing an E-collar for a day or two, note that you will probably have to feed him his cecotropes, since he will not be able to reach them for normal ingestion. (More information on the nature of cecotropes can be found in
"The Mystery of Poop".)
7. Offer your rabbit a
bowl of water, even if a water bottle is usually used. A rabbit needs to drink after surgery, but often won't do so if he has to "work" for his water. He will recover more quickly if he's well hydrated.
Hope this helps!
sas