Correlation of moniliformin, but not fumonisin B1 levels, in culture materials of Fusarium isolates to acute death in ducklings

Mycotoxin Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, Peoria, Illinois 61604, USA. VESONDRF@MAIL.NCAUR.USDA.GOV

Five isolates of Fusarium moniliforme and two isolates Fusarium proliferatum of the Section Liseola were each fermented on rice for 21 d at 25 C. Each Fusarium-fermented rice, when dried and mixed into a poultry diet (10% by weight), caused a varied degree of acute mortality in baby Pekin ducklings. The acute (death in less than 48 h) mortality correlated significantly only to the amount of moniliformin in fermented rice, thus in the diet, but not to the amount of fumonisin B1 in fermented rice. This correlation of moniliformin concentration and noncorrelation of fumonisin B1 concentrations to acute toxicity were confirmed by duckling assay using diets containing these purified mycotoxins.