Equinews.com - Full Article
By Kentucky Equine Research Staff · May 22, 2014
Forage plants derive mineral content from the soil in which they grow. For the most part, horses that have free access to quality grazing will ingest small but adequate amounts of microminerals such as iron, manganese, and cobalt.
In some locations, levels of copper, zinc, iodine and selenium are too low to provide optimal levels of these elements through grazing alone, and a fortified feed or supplement will be needed. Horse owners can have their soil tested to see if supplementation is warranted in their area. For horses that do not require additional calories beyond what pasture provides, but need additional microminerals, a ration balancer is a good choice...
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