The ones that have the niacin not listed have the information available if you contact the manufacturer. It isn't listed in most cases because the USDA did not make it a requirement to be included on the feed analysis. I don't remember exactly what it is but do know that the Purina 30% protein Startena does have the necessary amount of niacin.
Brewer's yeast or vitamin B complex in the water. It is a concern with keets, poults and game birds. It's the lysine and methionine that can be problematic supplementing.
So... it looks like dairy is a good source of lysine and eggs of methionone (in things one might reasonably consistently supplement game birds with--if GB specific feed isn't available.) I'm guessing if they free-range (in summer) they ideally would get these nutrients from insects?
I think you'd be happiest w/Purina startena. I had to have it shipped to me, but everything local had medication in it, and the Manna pro was a lot of crumbs. I was very happy w/consistency of Purina and it passed thenutritional reqs.
The lysine and methionine levels are also lower. If one can't find a proper grower (usually about 24% protein), a high quality chick starter can be substituted.
