Our primary souces of manganese ores that are used to provide the manganese compounds used by our industry come from Africa, Australia, and New Zealand. There are currently two North American producers of man ganese sulfate for the feed industry. Analyses will vary from producer to producer due to different processes being used. Manganese is needed by ruminants to guard against breeding difficulties. In swine, manganese is necessary for maximum growth and lean to fat ratio.
Manganese sulfate is used primarily in diets where solubility is a factor.