Table 2.

Effect of microencapsulated sodium butyrate on the organ index of broiler chickens challenged with clostridium perfringens.

Diet	Challenge	Liver Index	Spleen Index	Bursa of Fabricius Index	Thymus Index
Control	CON	16.99	1.37	1.14	2.34 a
SB		18.04	1.49	1.23	1.84 ab
MS-SB		17.67	1.77	0.76	2.43 a
Control	CP	17.77	1.84	0.53	1.46 bc
SB		19.74	1.89	0.75	0.98 c
MS-SB		17.25	1.62	0.92	0.97 c
SEM		0.65	0.11	0.19	0.14
Main effect
Diet	Control	17.38	1.60	0.83	1.90 a
	SB	18.86	1.70	0.99	1.41 b
	MS-SB	17.46	1.69	0.84	1.63 b
Challenge	CON	17.56	1.54 b	0.73	2.24 a
	CP	18.25	1.78 a	1.04	1.37 b
p-value
Diet		0.057	0.743	0.694	0.005
Challenge		0.221	0.034	0.063	<0.001
Diet × Challenge		0.304	0.051	0.128	0.023

Note. Number with different letters in the same column are statistically significant.