Table 1.

The experimental protocol and groups.

Group order	Treatment strategy
Group 1 (G1)	Negative control group (non-infected and non-treated/healthy group).
Group 2 (G2)	Positive control group infected with Eimeria tenella at age of 14th days (infected non-treated group) (10, 32).
Group 3 (G3)	Infected with Eimeria tenella at age of 14th days and treated with 5 ppm diclazuril in the drinking water (0.5 mL/L) at age of 19th days for 3 successive days in drinking water (30).
Group 4 (G4)	Chicks treated with lactoferrin (250 mg/kg of diet) from 1st day of age until the end of experimental protocol and infected with Eimeria tenella at age of 14th days (31).
Group 5 (G5)	Chicks received lactoferrin (250 mg/kg of diet) from 1st day of age until the end of experimental protocol and infected with Eimeria tenella at age of 14th then treated with diclazuril (5 ppm) in the drinking water (0.5 mL/L) at age of 19th days for 3 successive days in drinking water (30, 31).