What's left of the leg from the hock down will almost definitely auto-amputate.
The red line is the area where the flesh will likely separate off. The yellow line is what the stump will most likely look like once fully healed. She may end up keeping the space between the yellow and red lines...
Wet or dry doesn't really matter, but dry necrosis is arguably better since it separates more easily from healthy flesh (instead of being attached by fleshy "strings") and because dry necrosis typically doesn't give off much of a smell, so it's less likely to attract flies. Dry necrosis is what...
Sometimes they smell and sometimes they don't. Typically it only smells if there's pus involved, since that's the active "decay" and gives off that horrible smell. If it's dry necrosis (like this seems to be) there usually isn't that much of a smell, if any at all.
Don't beat yourself up over...
So, a few things. If you haven't already, stop feeding her bread. This can swell and mold in the crop and cause sour crop and bacterial infections, which would open up a whole other can of worms. She should be getting her normal feed and one scrambled egg per day with nothing added.
If you need...
The lesions can vary in amount and size. Some birds are more resistant and will carry on longer before succumbing whereas others are unfortunately much more sensitive.
Yes, the spray should work just fine to keep her on the mend! I wouldn't return her fully to the rest of the flock until the exposed skin is completely covered by new feathers (just to keep them from pecking at her.) She looks wonderful though and I can't wait to see her back with the hens! :hugs
The technical term is lamellae, but yes, they're like little teeth! Lamellae are serrations along the edge of the bills of most waterfowl. They basically function the same way as whale baleen. Dabbling ducks use them to sift through mud to find food, and geese use them to rip up blades of grass...
In fowl and poultry it's only really heard of in neglected and abused animals, such as battery hens (and is most often seen in instances of restrictive caging where the bird can't move around much so their only stress relief is self-mutilation.)
This duck looks to be in very good health which...