I get loose mineral from the vet and was wondering if I still have to get them a salt block? It's starting to get hot and they are starting to breathe heavy. If I do have to give them a salt block, what kind? I saw at the farm supply, many different kinds. The vet also told me that the mineral for sheep should work good for goats but I've heard that sheep don't need as much copper as goats do. So what do I do? This mineral is made especially for our area. Any ideas? Don't want to have copper deficiency in them.