On the right footpad there seems to be what is called bumblefoot which needs attention as well.
This is what I was thinking which led me to wonder if the infection was on the other foot caused the toes to be lost. I've never seen an infection of bumble that's become necrotic or affected the bone. I'm also wondering if it's a combo of mites and bumble or if perhaps the toes were lost to frost bite.
I'd go back to the vet and ask for antibiotics SMZ/TMP suspension Trimethoprim sulfamethoxazole which is a broad spectrum antibiotic but with bumblefoot this bad, it would likely not eliminate the bumble (which the turkey definitely has on the right foot).
I am personally, and currently using
Tricide-Neo and soaking my chicken's bumblefoot in it for five minutes once a day to see if that improves bumblefoot (I found the suggestion on here but can't find the thread).
I have also seen a thread where it was treated using
silver sulfadiazine (a topical antimicrobial that is amazing for animals and people and IMO better than triple-antibiotic oinment) by applying it to the foot and wrapping it for the day. This will also act as a moisturizer.
In my efforts with the Tricide-Neo, I find little change has occured over 5 days so I believe I am going to start using the silver sulfadizine in addition to soaking the foot. I am not doing these treatments in addition to oral antibiotics but I firmly believe that would be the most effective.
I am unfamiliar with treating for scaly leg mites, but the scales on the top of the foot certainly look like scaly leg mites. I've never treated that myself and can't offer suggestions to that but I think simultaneously treating for bumblefoot and leg mites would be the best route.
Poor guy! We can't grow back his toes but I hope we can get some help for him.
Edit: Here are more treatment suggestions for bumblefoot:
http://www.poultrydvm.com/condition/bumblefoot
