Hen is sick, messy vent, I don’t know what this is

[Fluffnut]

My Barred Rock, Moonshine, developed a really messy vent a few days ago. It smells wrong, and is green in some spots. She’s been squatting/waddling, but I don’t think she is egg-bound. She has not lost much weight that I can tell so far, and is still interested in their kitchen scraps.
I use permethrin to keep any mites down, and usually put cayenne or garlic powder in their food (standard layer feed) for internal parasites. When I refilled their water almost 2 weeks ago I added Nutridrench according to the bottle’s instructions to give their systems a boost, since they hadn’t laid since the October/November molt (they are laying normally now).
That is the only recent change to their living space; all her sisters are healthy.
I had one hen who had similiar systems a couple years ago, and I tried the standard ‘sick hen’ treatments, but nothing worked and she died.
It didn’t seem contagious though, and I haven’t quarantined Moonshine yet because I don’t want her to get depressed, which I have had happen. Does anyone recognize this? I can post pictures in a little while.

 

[Fluffnut]

From what I can tell it is vent gleet, which somehow I only heard of quite recently? So I will quarantine her, and try to wash her vent very frequently. I still don’t know what caused this but hopefully I can get her back into shape. Are there any particular probiotics good for hens?

 

[HeatherKellyB]

Did you have a chance to get pictures? I "watched" this thread in hopes of seeing the pictures.

I believe rooster booster makes a probiotic. Let me check on that

 

[Aunt Angus]

Vent gleet isn't contagious.really, so no need to isolate. Cleaning is important, and you may want to trim the feathers around her vent. It's a fungal infection, easily treatable (though it takes a while).

You can feed plain yogurt for active cultures, but you need to treat the fungus with antifungal cream. I've given it both orally and directly to the vent 2x a day for at least a week. You may want to read more about it, though. It's been a while since I've had a hen with gleet. I could be forgetting how I treated it.

It's often brought on by stress, from what I've read.