Effects of tannic acid on the immunity and intestinal health of broiler chickens with necrotic enteritis infection

Table 4 Intestinal lesion scores and cecum C. perfringens concentrations in broilers with NE on d 28

	NC	PC	PTA1	PTA2	PTA3	PTA4	P-value¹	L²	Q²
Intestinal lesion
Duodenum	0.36 ± 0.18	0.50 ± 0.19	0.57 ± 0.17	0.36 ± 0.18	0.43 ± 0.13	0.10 ± 0.07	0.407	0.064	0.383
Jejunum	0.21 ± 0.15^b	0.86 ± 0.09^a	0.86 ± 0.09^a	0.65 ± 0.09^a	0.71 ± 0.10^a	0.50 ± 0.15^ab	0.003	0.018	0.693
Ileum	0.21 ± 0.15^bc	0.57 ± 0.17^ab	0.71 ± 0.15^a	0.14 ± 0.07^c	0.36 ± 0.09^abc	0.29 ± 0.10^bc	0.024	0.023	0.443
Cecum C. perfringens	2.75 ± 0.87^b	6.00 ± 0.10^a	5.44 ± 0.34^a	5.37 ± 0.15^a	5.33 ± 0.10^a	5.17 ± 0.18^a	0.001	0.007	0.262

n = 7. Data are the mean ± SEM. NC no tannic acid treatment or NE infection, PC NE infection + 0 mg/kg tannic acid, PTA1 NE infection + 250 mg/kg tannic acid, PTA2 NE infection + 500 mg/kg tannic acid, PTA3 NE infection + 750 mg/kg tannic acid, PTA4 NE infection + 1,000 mg/kg tannic acid, L Linear, Q Quadratic
¹Overall P-values obtained from ANOVA; ²P-values obtained using contrast trend analysis. ^a^–^cDifferent lower-case letters in the same column indicate significant differences (P < 0.05)

ISSN: 2049-1891