I thought I read somewhere but now I can't find it, that regular rolled oats can be used as a form of niacin. Does anyone know if this is true? My friend told me she never used niacin supplement for her ducks and used regular chick starter grower with 18% protein which is what I'm using and never had any problems. I thought I'ed err on the side of caution and make sure they have it. Does make me wonder though how necessary it is or was she just lucky to not have any issues with her ducks?