Hello! This is my second season of chicks but my first with ducks. we bought 17 chicks this week and decided on some ducks also. Right not I have them all in the same brooder and they seem to be doing just fine. The only problem is one of our ducklings has a lame leg. I have been researching this and most everything I see says it is most likely due to a Niacin deficiency. I guess my big question here is if it is okay to put a Niacin supplement/brewers yeast in with the food that the chicks are eating also. Thanks!