A number of duck folks use the B complex, and while Storey's Guide specifies niacin, from what I have read over the last four or five years, other B vitamins are involved in - or can be involved in - leg issues. Some use brewer's yeast but that's a little iffier on dosage. @jenniemig used several things with her special ducklings, you may want to check in with her or do a search for her threads.
So, there is something called perosis. It is a problem with ligaments and joints. And I believe that if you start early enough, with good nutrition and sometimes bracing, things can work out pretty well. But early intervention makes all the difference - and that is what you are doing!
So I don't always picture things well, so I won't pretend to know exactly what kind of bracing or wrapping the duckling might need, if any. Vet wrap is nice, you probably know, since it flexes but can provide support. I always am concerned about wrapping too tightly and cutting circulation. I also like letting them float in warm water for a bit - maybe 5 or 10 minutes - to increase circulation, take weight off the leg, and build muscle. Especially ducklings, and I think you know this already, cannot be left alone in water.
So, there is something called perosis. It is a problem with ligaments and joints. And I believe that if you start early enough, with good nutrition and sometimes bracing, things can work out pretty well. But early intervention makes all the difference - and that is what you are doing!
So I don't always picture things well, so I won't pretend to know exactly what kind of bracing or wrapping the duckling might need, if any. Vet wrap is nice, you probably know, since it flexes but can provide support. I always am concerned about wrapping too tightly and cutting circulation. I also like letting them float in warm water for a bit - maybe 5 or 10 minutes - to increase circulation, take weight off the leg, and build muscle. Especially ducklings, and I think you know this already, cannot be left alone in water.