Usnic acid and tannic acid as inhibitors of coccidia and Clostridium perfringens: alleviating necrotic enteritis and improving intestinal health in broiler chickens

Table 4 Effects of usnic acid and tannic acid on the number of coccidia oocysts in the feces of broilers with NE

Items	PC	SA	UA	UTA	P-value
19 d	4.81 ± 0.016^a	4.04 ± 0.105^c	4.62 ± 0.031^b	4.49 ± 0.038^b	< 0.001
20 d	4.85 ± 0.047^a	3.83 ± 0.055^c	4.60 ± 0.027^b	4.49 ± 0.021^b	< 0.001
21 d	4.50 ± 0.026^a	3.26 ± 0.104^c	4.22 ± 0.032^b	4.23 ± 0.099^b	< 0.001
42 d	3.77 ± 0.032^a	3.12 ± 0.259^b	3.44 ± 0.119^ab	3.18 ± 0.142^b	0.016

Data are presented as the mean ± standard error. ^a^–^cDifferent letters indicate significant differences. PC: positive control group; SA: 500 mg/kg salinomycin group; UA: 300 mg/kg usnic acid group; UTA: 500 mg/kg tannic acid + 300 mg/kg usnic acid group. The data presented in Table 4 have undergone log-transformation. n = 5

ISSN: 2049-1891