Originally Posted by Saddlebag
Buy a mineral lick AND also give her loose salt. Horses love plain pickling salt that is coarser than household salt. I mix them about 50/50. Horses do need salt and a lick will not provide them with enough. The lick is designed for the raspy bovine tongue not the smoother horse tongue which gets sore before enough salt is ingested. Always provide salt to maintain the finite balance with potassium and other minerals.
Thats why you don't buy cattle salt blocks, the horse ones arnt as hard,
But to answer your question. Buy a commercial HORSE elyte, the dosage will be on the lable. There is no reason whatesoever to use table salt which lacks the other minerals they need. And still play guessing games with dosage.