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Have you been able to hold her and carefully examine her foot and leg and the top of the leg with eyes and hands? Any extra warmth? She may have the beginnings of bumblefoot, may be something else.
In any case, I would give her Epsom salts compresses on the foot and leg twice a day and see how she's doing in three or four days.
If you want to feed liver, I am not sure I would give very much at all, and I would first freeze it, then feed just a little bit without cooking. But if she's two years old, I don't know that it would be a niacin deficiency. That's generally a duckling problem. That said, ducks are little individuals, so I would not rule anything out.
Have you been able to hold her and carefully examine her foot and leg and the top of the leg with eyes and hands? Any extra warmth? She may have the beginnings of bumblefoot, may be something else.
In any case, I would give her Epsom salts compresses on the foot and leg twice a day and see how she's doing in three or four days.
If you want to feed liver, I am not sure I would give very much at all, and I would first freeze it, then feed just a little bit without cooking. But if she's two years old, I don't know that it would be a niacin deficiency. That's generally a duckling problem. That said, ducks are little individuals, so I would not rule anything out.