Fumonisin concentrations in Brazilian feeds associated with field outbreaks of confirmed and suspected animal mycotoxicoses.
Sydenham E.W. | Marasas W.F.O. | Shephard G.S. | Thiel P.G. | Hirooka E.Y.
Twenty-one Fusarium moniliforme-contaminated feed samples associated with outbreaks of confirmed and suspected mycotoxicoses in various animal species were collected from farms in the State of Parana, Brazil, and analyzed for the fumonisins. Fumonisins B1 (FB1) and B2 (FB2) were detected in 20 and 18 of the 21 feed samples, respectively, at concentrations of 0.2-38.5 micrograms g-1 FB1 and 0.1-12.0 micrograms g-1 FB2. In addition, duckling toxicity and fumonisin levels were determined in corn cultures of 26 F. moniliforme isolates from the feed samples. With the exception of one isolate, all were acutely toxic to ducklings and contained 65-4420 micrograms g-1 FB1 and 5-1380 micrograms g-1 FB2. The results constitute the first report on the natural occurrence of the fumonisins in animal feeds from Brazil.
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