Table 4.

Prevalence of birds presenting lesion scores: coccidiosis due to Eimeria spp. and necrotic enteritis (NE) caused by Clostridium perfringens^*.

Treatments	Eimeria acervulina		Eimeria maxima		Eimeria tenella		NE
	1	2	1	2	1	2	1	2
Control	28.57	28.57	28.57	0	42.86	7.14	42.86	7.14
Bacitracin	42.86	21.43	21.43	0	35.71	14.29	42.86	0
CP1	42.86	21.43	7.14	0	28.57	7.14	21.43	0
CP2	42.86	28.57	14.29	0	7.14	14.29	78.57	0
COH150	50	14.29	21.43	0	0	21.43	78.57	0
COH300	57.14	7.14	14.29	0	7.14	7.14	28.57	0
BP1	42.86	28.57	21.43	0	35.71	7.14	21.43	0
BP2	50	7.14	0	7.14	35.71	7.14	50	0
BOH150	21.43	21.43	7.14	7.14	35.71	0	57.14	0
BOH300	42.86	28.57	7.14	0	28.57	7.14	50	0
P-value	0.88		0.94		0.58		0.01

^*Two birds per pen (14/treatment, 140 birds total) were sacrificed on days 21–22 for necropsy.

E. acervulina causing white plaques in the duodenum; the scores were scored on a scale of 0–4: “0”—normal, “1”—a maximum of five lesions per cm² mainly in the duodenum, “2”—several lesions in the duodenum and/or jejunum, but not coalescent.

E. maxima induces bleeding in the middle of the small intestines, scored from 0 to 4 as follows: “0”—normal, “1”—few petechiae on the serosal surface around Meckel's diverticulum, or in other areas of the intestine, “2”—several petechiae on the serosal surface, small petechiae on the mucosal side, watery contents, orange intestinal mucus.

E. tenella causing severe inflammation of ceca includes intestinal score from 0 to 4: “0”—normal, “1”—few petechiae on the cecal serosal and mucosal surfaces or little blood in the ceca and thick cecal contents, “2”—petechiae on the cecal serosal and mucosal surfaces or thick cecal wall or contents containing blood or fibrin and presence of grooves.

C. perfringens was scored on a scale of 0 to 3: “0”—no gross lesions, “1”—occasional lesions consisting of small areas of erosion, necrosis, or hemorrhage, “2”—minor gross lesions consisting of occasional small areas of hemorrhage or necrosis at one to two lesions per 5 cm² throughout the small intestine.