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3970 feedsamples were analysed for the Fusariumtoxins deoxynivalenol and zearalenone. 979 (24.6 %) of the submitted feed samples came from farms with case history (swine herds: decreased feed intake and daily weight gain, vomiting, cannibalism, impaired fertility, small litter size, weakness of newborn piglets, prolonged oestrus of sows; cattle: persistence of the follicular ovarian cysts, enteritis, decreased slaughter weight, feed refuse), which correlated positively with the mycotoxicological results. 74 % of the samples contained cereal and corn components respectively or complete diet samples from swine herds. Based on economic losses the fusariumtoxin Desoxynivalenol is most important in Austrian husbandry and particularly found in maize, cornsilage, wheat and oat.