Oh, I am sorry for your loss. If you would like to get a necropsy through your state vet to find out what was wrong, you could keep her body cold wrapped innplastic bags in the fridge or on ice in a cooler. Just don’t freeze it. Here is a list of state vets to contact...
Canker is one of the diseases I would cull for in my chickens, since it can affect the whole flock. The state vet lab can do a necropsy and tell you exactly what is wrong. That is a personal choice, but I would at least get a necropsy if she doesn’t recover. If you chose to do one here is the...
Can you post any pictures of the swollen legs and feet? You have to avoid lidocaine and other -caines in poultry. They can be used in small amounts by vets during surgery, but they can be toxic to chickens. Vicks is recommended by the APA to treat scaly leg mites. The menthol soothes the pain...
Was your hen eating chicken feed during her Corid treatment? Or was she not taking food due to her coccidiosis? Let us know if the B complex helps? Have you ever had Mareks disease or any unexpected deaths in your flock before?
Valbazen (albendazole) is no longer available at this time. But you can get the generic albendazole here in smaller less expensive quantities:
https://toltrazurilshop.com/products/albendazole-11-36-liquid-solution/?srsltid=AfmBOooK2wfRQFKX3oRka1hUhFsnzHd748yDIJ-5yHfo4S-2KbIn6tOU
Dosage is 0.08...
Sorry for your loss. What state are you in @bendelstate2 ? Most state vets will do a necropsy if you keep the body cold, not frozen, and take it in or ship it overnight. That would get you a diagnosis. Here is a list of state labs to contact...
Just to see what the wet form of fowl pox looks like inside the beak and throat, here is a graphic picture of it in a hen during a necropsy:
https://tvmdl.tamu.edu/case-studies/diagnostic-guidance-fowl-pox/
You all have a lot of fowl pox down in TX, so that would be a good possibility. Pox is a virus carried by mosquitoes, and lasts around 3 weeks. There is a vaccine available for those not exposed, by she would be immune to it in the future. Here is some reading about it...
Canker is one of the diseases I would cull for. It is contagious to other birds and chronic, meaning it may be controlled but not cured. Can your vet take a scraping of the material and get it tested. It really does no good to treat for something when it has not been diagnosed with testing. It...
Here is a good thread to read all the way through on Tiagard, which is tiamulin, the same as Denagard:
https://www.backyardchickens.com/threads/denagard-use-and-egg-withdrawal.1141356/
It basically says that dosage is 2 ml per quart (4 ml per gallon,) or as high as 15 ml per gallon. 15 ml is a...
There is no egg withdrawal time with Tiagard, Denagard, or Tiamulin (all the same medication.) There is a 2 day meat withdrawal rime. Here is some reading:
https://www.backyardchickens.com/threads/denagard-use-and-egg-withdrawal.1141356/
@Miss Lydia is knowledgeable about ducks. A little saline or eye wash into the eye followed by either Terramycin eye ointment ot plain triple antibiotic ointment twice a day is what I would probably do.