This is complicated- can any of you experts help?

[PrincessSweetChick]

I have had a silkie bantam hen for 18 months. She came to me, unknowingly, with vent gleet. I treated with copper sulfate, and anti-fungals before I took her to the vet. Vet found mites and felt that was the problem. Ivermectin caused the gleet to briefly dry up. The symptoms came back a few months later: white discharge. Recently she has taken to laying shell-less eggs. I gave her about 4 Ivermectin treatments, copper sulfate, clotrimazole, and in a long shot, Frontline. Not improved. Can anyone identify a possible cause or course of treatment? The other hens are unaffected. Her diet is layer mash, scratch, scraps, oyster shell and grit. She has Avia Charge in her water, She is in a chicken tractor and moves to a new patch of grass virtually every day. Besides the gleet and shell-less eggs, she looks good and has a healthy appetite.

Well, I just don't know what is left to try for this hen! Anybody out there with any ideas? Much Appreciated.

 

[chkn]

Can you post a picture? Is it goopy or running? It may be she needs a worming with some Valbazan.

 

[PrincessSweetChick]

My camera is broken but the discharge is more like powder. It is dried on her rear end.

Worming is a possibility. I don't know much about subject so I just figured Ivermectin and Frontline would cure her. Is valbazan the best wormer?

Any further guesses? Thanks, everybody, for any input you can give