Table 3. Main nutrients and pollutants in the diets.

Main nutrients and pollutants	Negative/positive control	Parental corn	GM corn
Crude protein(%)	19.42	20.81	20.95
Crude fat(%)	10.07	7.88	7.53
Crude ash(%)	6.30	6.19	6.62
Total carbohydrate(%)	7.15	7.11	6.78
Crude fibre(%)	2.39	1.30	1.51
Calcium(%)	1.36	1.22	1.25
Phosphorus(%)	0.80	0.84	0.94
Lead(mg/kg)	0.21	0.35	0.35
Arsenic(mg/kg)	0.26	/	0.09
Mercury(mg/kg)	0.018	0.02	/
Cadimium(mg/kg)	0.13	0.19	0.19
aflatoxin(µg/kg)	9.42	10.82	12.40
benzene hexachloride(mg/kg)	/	/	/
DDT(mg/kg)	/	/	/

(note:“/” : <0.01 mg/kg).