Table 2.

Model of the experiment.

Factor	Groups	N (54)	Level of Factor
Factor A Fe Level in Diet	D	18	A1—10% recommended Fe level in the diet for rodents (5 mg/kg) (Fe—deficiency)
	C	18	A2—recommended Fe level in the diet for rodents (45 mg/kg) (Fe—control)
	H	18	A3—400% recommended Fe level in the diet for rodents (180 mg/kg) (Fe—oversupply)
Factor B Cr(III) Level in Diet	1	18	B1—recommended Cr(III) level in the diet for rodents (1 mg/kg) (Cr—control dose)
	50	18	B2—I supplemental dose of Cr(III) (50 mg/kg) (Cr—medium dose)
	500	18	B3—II supplemental dose of Cr(III) (500 mg/kg) (Cr—high dose)
Combinations Factors		N (54)
A1B1	D1	6	Fe 5 mg/kg, Cr 1 mg/kg
A1B2	D50	6	Fe 5 mg/kg, Cr 50 mg/kg
A1B3	D 500	6	Fe 5 mg/kg, Cr 500 mg/kg
A2B1	C1 (control)	6	Fe 45 mg/kg, Cr 1 mg/kg
A2B2	C50	6	Fe 45 mg/kg, Cr 50 mg/kg
A2B3	C500	6	Fe 45 mg/kg, Cr 500 mg/kg
A3B1	H1	6	Fe 180 mg/kg, Cr 1 mg/kg
A3B2	H50	6	Fe 180 mg/kg, Cr 50 mg/kg
A3B3	H500	6	Fe 180 mg/kg, Cr 500 mg/kg