Added the brewer's yeast to the feed yesterday.
Not sure what info I can pass along, I just get the formulas. He is the nutritionist at the local farm and ranch coop. He's made a few formulas for me, so that I can feed a more affordable soy-free food to my poultry. I had been feeding a soy-free & gmo-free feed, but that was getting to be expensive. Plus I was noticing some problems with it. So initially started out with a grower formula and a layer formula. Now have one for a starter. Inadvertently the first two feeds also ended up not having grains that contain gluten, so asked for that with the starter too.
I read somewhere not to feed powdered feeds to ducks? Don't remember where. If so I will need to find out if I can add water to the starter blend and then dehydrate it to make crumbles. Will ask him tomorrow along with about the niacin levels in the feed.
Feet seem to be slowly improving. Used what I had on hand to begin with, which was the reason for the improvised braces cut from a cereal box. Picked up a new brand of tape, that seems to work really well for this purpose. Brand is Nexcare Sensitive Skin. Sticks really well, but also pulls off easily without the usual ouch factor. Made it easy to reposition it on a wiggling duckling, but sticks good enough that he can't pull it off.