Wasn't Baytril rendered illegal to use on poultry?
I have never seen a hen live very long after a round of bloating, except once. Months, yes, years, no. And I think it was a passing infection that I caught very, very early. She is still with me now at 10 years old, that that is only one hen. All others, and I mean many, many hens, died eventually from their internal issues. Draining the hen is never a permanent solution.
No, they do not go under anesthetic to be drained that I'm aware of-it's just a needle prick, no need for medication for it. We drained several hens periodically, but we no longer do it.
They bloat up again almost 100% of the time. We give a round of antibiotics once and only once. When they bloat up a second time, we do not give any medications, period. Some "un-bloat" on their own, but it always comes back. This is a chronic condition. Yes, they can go on for awhile, bloating then having the bloat dissipate, but it will eventually kill the hen because the underlying issue has not been resolved. Most reproductive issues being genetic/hormone-based, you really cannot fix them, not permanently. Since I quit raising hatchery stock, it rarely ever happens anymore, as I've said several times. Now I have a barn full of ancient hens, LOL.
Some bloat can be from heart or liver issues so those definitely cannot be treated. And you cannot tell which it is from looking/examining the hen yourself.