Table 2.

Coccidial lesions according to the method described by Johnson and Reid [11].

Species of Coccidia	Score 0	Score 1	Score 2	Score 3	Score 4
E. acervulina	No gross lesion	A few white spots on the mucosal surface of the duodenum	Lesions much closer together but not coalescent, which may extend to 20 cm in the jejunum	Coalescent lesions and watery content.	White aspect of the mucosal surface. No feed, watery content. White creamy exudate.
E. maxima	No gross lesion	Small red petechiae on the serosal side of the mid-intestine	Numerous petechiae. Possible orange mucus	Ballooning and thickening of the intestine. Much orange mucus and watery content.	Ballooning of all the intestine. Orange mucus, blood clots and digested blood.
E. tenella	No gross lesion	Very few petechiae on the cecal wall. Pasty cecal content.	More petechiae. Cecal wall somewhat thickened. Blood mixed with cecal content.	Cecal wall greatly thickened. Only blood or blood cores.	Cecal wall greatly distended with blood or fibrinous cores.