title: [Fusaria and their mycotoxins in hay and grass silage from grassland with different intensities of management].
abstract: Conservation forage (17 hay and 18 grass silage samples) from 15 farms with different intensities of grassland management in the Federal State of Brandenburg were examined for contamination with fusaria and their mycotoxins. The numbers of culturable filamentous fungi in hay were determined by plate counting andFusarium isolates were classified taxonomically. The mycotoxins Zearalenone (ZEA) and Deoxynivalenol (DON) were extracted from hay as well as silage by different procedures and detected chromatographically (HPLC). The numbers of filamentous fungi in the hay samples were 10(2) and 10(6) CFU/g FM independently of intensive or extensive management. Only fourFusarium species were identified.Fusarium culmorum, a potential toxin producing species, was most frequently detected (52% of all isolates). ZEA was found in two hay and four silage samples (6-66 μg/kg), DON in three hay and seven silage samples (63-1290 μg/kg). There were no differences between forage samples of extensive and intensive cultivated grassland of the year 2003 regarding numbers of fusaria and the content of their mycotoxins.
authors.affiliation: Landwirtschaftlich-Gärtnerische Fakultät, FB Phytomedixzin, Humboldt-Universität Berlin, Lentzeallee 55/57, D-14195, Berlin.
authors.forename: U
authors.initials: U
authors.lastname: Korn
authors.forename: M
authors.initials: M
authors.lastname: Müller
authors.forename: U
authors.initials: U
authors.lastname: Behrendt
authors.forename: M
authors.initials: M
authors.lastname: Gossmann
authors.forename: M
authors.initials: M
authors.lastname: Ditz