Dairy nuts are concentrates but I only feed them to my adult goats, from the time they go to the billy right through pregnancy, birth, feeding their kids and then me milking them, as during all this time I think they need the extra nutrition.
Sheep coarse mix is also concentrates, as it says designed for sheep, but young goats do well on it in my opinion, as long as they have access to either a specific goat mineral or a red Rockie, so that they get the additional copper that goats need but sheep mustn't have.