Table 3.

The experimental scheme of applied copper.

Symbol of Group	Type of Group	Administered Diet
Cusalt	Control (n = 10)	Four-week-diet with mineral mix, containing 6.5 mg Cu/kg; Cu from CuCO3
CuD	Experimental (n = 10)	Four-week-diet with mineral mix, deprived Cu
CuMNP	Experimental (n = 10)	Four-week-diet with mineral mix, 6.5 mg Cu/kg; Cu from nanoparticles preparation

D, deficiency; n = 10, number of rats used in particular feeding period; MNP, metallic nanoparticle; S, salt. Provided Cu dosage was calculated taking into account CuCO₃ in mineral mixture or Cu from Cu nanoparticles preparation).