ycbm
Overwhelmed
And the horse I think too. I don't have to feed my mare minerals and she has great feet. Gelding on the other hand needs them to help his feet and keep winter abscesses at bay.
Probably not dissimilar to people who have great hair/nails regardless of their diet, and then some have poor quality and need to supplement with zinc or multi vits/mins..
Exactly. I once ran out of brewer's yeast. I had three horses. One stayed rock crunching, one felt the odd stone, one went completely footie.