Blocks, Salt and Protein
Salt and protein blocks provide nutrients that supplement a horse's primary diet. Most horses benefit from unrestricted access to a trace mineral salt block.
Molasses protein blocks are primarily useful for horses whose diets are unusually low in protein; access should be regulated.
A horse that overindulges in protein blocks can be subject to colic, dehydration, or diarrhea.
Horses can also benefit from calcium and phosphorous blocks, depending on their age and diet.