Could also try a multivitamin in case it’s something else
Look up D and calcium deficiency
Causes swelling in the leg
Soft bones and beak
They stop being able to walk and move
In that case you would give her a few drops of D vi sol on her beak or in her mix of feed
3 times a day you give...
That’s feed could be part of the problem
The starter feed should only be till 3 weeks of age then up to grower
I add 1 tbs of nutritional yeast to every cup of feed till 10 weeks and still sprinkle it on my adult ducks feed
Pekins grow so fast that they need a bit of extra niacin and less...