<p>Mycotoxins are chemical compounds of low molecular weight, produced by fungus and they produce pathological effects as in human beings as in animals. Although the total number of mycotoxins is not known, researchers has considered that thousands of potentially toxic fungal metabolites exist, within mycotoxins of great preoccupation are: Aflatoxins, Tricotecenos (Vomitoxina, Nivalenol, Neosolaniol, T2 Toxin, Diacetoxyscirpenol), Zearalenona, Fumonisinas, Ocratoxin, Citrinin, Esterigmatocistina, Ciclopiazónico Acid, Patulina, alkaloids of the Ergot, and Moniliformina. These mycotoxins are in the most of products of the livestock industry, such as corn, sorghum, soy, silages, cotton pulp and even milk.</p>