BIGTEX said:Sorry for my ignorance, why no salt blocks? My father in-law loves them.
We're in the same boat on salt blocks. Short story is most cattle don't really need it and if put out with mineral can negatively impact proper intake in both directions. The yellow salt blocks with Iodine in them are especially discouraged unless you know you need iodine. The way it was explained to me was that excess iodine will react with other minerals in the cows body and make compounds that that cow can't utilize, effectively creating additional defiiciencies.
Short story, if ornery old men insist on it - feed plain white salt blocks. Otherwise, just feed mineral supplements - most of which are just fine.