Big 6® is one of the most popular trace mineralized salt in the eastern half of the United States. With the six core micro-minerals required for animal health – zinc, manganese, cobalt, copper, iodine and iron – it’s the first choice for weight gain, feeding efficiencies and overall herd performance. For all classes of beef and dairy cattle, pigs and horses. This feed contains copper. Do not feed to sheep. Available in 50-lb bag.