Mycotoxins are secondary metabolites produced by fungi that cause biological origin acute and chronic mycotoxicosis. Molds occurring as a result of the invasion of feed raw materials by fungi are seen extensively. These molds cause deterioration of the structure of the nutrients, as well as deterioration of the biological systems, severe toxications and even death of the animals consuming the moldy feeds. According to the data of FAO, 25% of agricultural products produced all over the world can be contaminated with mycotoxins and it is noted that the contamination degree of mixed feeds is higher (40%) in Mycotoxicosis can have acute, chronic and latent characteristics. With respected to the mycotxicosis with acute characteristics, the animal takes the toxin in high doses with the feed in a short time and depending on the type of mycotoxin taken, symptoms such as hyperplasia, hemorrhage, diarrhea, loss of appetite, vomiting, edema and coma occur in the liver, kidney and spleen. Generally, the disease results in death. Chronic and latent ones are more common, and animals fed with low doses of toxin-containing feed for a long time face a number of economically important problems such as poor utilization of feed, decrease iv live weight, The effects of mycotoxins in different animal species are shown in the following table.