OK, dumb question...can I use human multi vitamins? If so, how much? I could get some pentavite from the chemist (that liquid stuff you give kids)
I was thinking more along the lines of poultry vits. They are readily available at most pet stores. Pentavite tastes awful and they wouldn't take it on their own accord. These powders are more cost effective and the chickens don't seem to mind it being added to their water.
http://www.littlevalleypoultry.com/poultry-medications/supplements-vitamins/solvita