I send you information about highest level of ochratoxin A recorded in cereals as feed:
Ochratoxin A
Barley and oats for feed:
incidence: 7/84, conc. range: 16–409 ug/kg (ppb),
country: Sweden23
incidence: 19/33, conc. range:
28–27,500 ug/kg, country: Denmark24
incidence: 4/4, conc.range: 69–6190 ug/kg,
Ø conc.: 1805.5 ug/kg, country: Denmark24
incidence: 3/3, conc. range: 4–141 ug/kg,
Ø conc.: 72.3 ug/kg, country: Finland281
References
23 Krogh, P., Hald, B., Englund, P., Rutquist, L., Swahn, O., 1974: Contamination of Swedish cereals with ochratoxin A. Acta Pathological et Microbiologica Scandinavica Section B 82, 301–302
24 Krogh, P., Hald, B., Pedersen, E.J., 1973: Occurrence of ochratoxin A and citrinin in cereals associated with mycotoxic porcine nephropathy. Acta Pathologica et Microbiologica Scandinavica Section B 81, 689–695
281 Lappalainen, S., Nikulin, M., Berg, S., Parikka, P., Hintikka, E.-L., Pasanen, A.-L., 1996: Fusarium toxins and fungi associated with handling of grain on eight Finnish farms. Atmospheric Environment 30, 3059–3065