I would like to know why rabbits get gas or bloat. I bought some rabbits from an auction, and all were doing good. Gaining weight and then they all stopped eating and looked like they were about to explode when they died. Is there a treatment for that? If so what?
I'm so sorry you had to deal with bloat. It is really challenging and very hard to watch happen
Changing diets are possible, especially if carbohydrates are high in the feed. Feeding calf manna at more than a SMALL amount will give them bloat and most likely kill them. I've seen it happen. For an adult rabbit no more than a tablespoon... and that is for a 9 to 12 pound rabbit. Less for small or youngsters. Feeds with corn, dried carrots and treats added can be a problem too. Main thing is to limit carb's, it causes a critical imbalance in the gut flora. For treats use Black oil sunflower seeds, it is high in fiber oil and protein. A piece of carrot is ok now and then. They love the green leaves of it. Parsley is another treat although they may not eat it at first.
Very often coccidia is a culprit in bloat. If the rabbits were housed at the auction site where they were standing in their own poo they can get a concentration of oocysts (sorta like an egg of coccidia but not a true egg) in their gut. They proliferate and the rabbit gets boat symptoms. This is why cages with drop through floors are recommended when housing rabbits.
Treating new rabbits for coccidia with Toltrazuril if you can get it is the best option. Unfortunately it is a vet prescribed medication. Same as what is used for dogs. An alternate is sulfaquinoxaline administered in the drinking water for 30 days It has to be changed out every 24 hours and doesn't totally kill it off but reduces the problems. Coccidia is pretty much always with rabbits but their immune system usually keeps it in check. I treat once a year for it.
Supportive care of a rabbit with bloat that *may* help is Baby Gas drops. It is simethecone which makes the gas bubbles join and become smaller as a result. Administer it orally. I also give water in the dropper because they often stop eating and drinking. Going without water can kill fast so watch water intake is very important.
I have found the very best help I can give if I catch it in time is to stop all pellet feed, use the gas drops and provide FRESH grass in small quantities. The grass can balance gut flora and it provides water as well. If they start eating then free feed timothy hay for a period of time. Like a week or so until they are eatting it well, then start adding some pelleted feed.
Bloat is something you may go for a long time without seeing but usually it will come up eventually. Watching for depressed, not drinking or eating can help you catch it early... but honestly rabbits are hard to read. There is a learning curve.
Before you use any cage that held bloated rabbits scrub it manually and keep it wet with a solution of ammonia and water for 10 minutes. I use a wet rag and keep wetting it down. (yep its a total pain and stinks) Ammonia kills the oocysts.
Good luck with your rabbits, I'm very sorry you went through this. Tough stuff