Table 1.

Experimental design and grouping.

Group	Diet
Con	Basal diet
CTC	Basal diet +75 mg/kg chlortetracycline (15%) premix
AEO1	Basal diet +250 mg/kg AEO
AEO2	Basal diet +500 mg/kg AEO
AEO3	Basal diet +1,000 mg/kg AEO