the relationship between different indices of the copper deficiency was studied in 136 slaughtered male cattle (< 2 years). copper status has been detected as marginally deficient in 57.4, 36.4, 34.6, and 28.2% of cattle based on the copper concentrations in plasma (5.5-14.5 μmol/l) and liver (19.7-189.1 mg/kgdm), plasma ceruloplasmin levels (85.4 - 178.2 mg/l) and erythrocyte superoxide dismut...