The best supplement to strengthen a duck legs is niacin in the form of niacinamide and the best product we have found to use for Ducks is liquid bcomplex - I know it says injectable, but it is given orally to Ducks one ML per day with a syringe with no needle on it carefully down one side of their mouth, following instructions from here
https://www.backyardchickens.com/ar...dications-to-all-poultry-and-waterfowl.73335/
Pictures showing the bottom of the feet will be helpful
Pictures of the legs and how they hang down is one different than the other? Are there any swollen areas?
Carefully feel up and down the legs for any abnormalities any lumps or any warm areas
Also, if you can make a video
Of how it is trying to walk or not walk
Here is the liquid b complex that we use
https://www.backyardchickens.com/ar...dications-to-all-poultry-and-waterfowl.73335/
Pictures showing the bottom of the feet will be helpful
Pictures of the legs and how they hang down is one different than the other? Are there any swollen areas?
Carefully feel up and down the legs for any abnormalities any lumps or any warm areas
Also, if you can make a video
Of how it is trying to walk or not walk
Here is the liquid b complex that we use
