Recently, we reported that urinary concentrations
of ZEN and its metabolites could be used to monitor
the natural ZEN contamination of cattle feed in farms
(Takagi et al., 2011). We incidentally detected a fattening cattle herd that repeatedly exhibited significantly
greater urinary ZEN concentrations than 3 other fattening herds. We suspected that the feed might have been
the source of this difference; however, because we