Table 4.

Differences in the alpha diversity of the cecal microbiota of weaned piglets ^1,2

Item	- ETEC K88		+ ETEC K88		SEM	P-value
	- FSBM	+ FSBM	- FSBM	+ FSBM		FSBM	ETEC K88	FSBM × ETEC K88
Observed_species	1102.33b	2131.67a	1041.17b	854.00b	130.927	0.02	< 0.01	< 0.01
Shannon	6.68	7.69	6.63	6.78	0.141	0.02	0.05	0.08
Simpson	0.97	0.98	0.96	0.97	0.003	0.07	0.14	0.49
Chao1	1237.73b	2424.03a	1174.07b	940.28b	151.793	0.03	< 0.01	< 0.01
ACE	1266.63b	2506.32a	1206.67b	951.99b	158.367	0.03	< 0.01	< 0.01

¹n = 06

² - ETEC K88 = infusing the phosphate buffer saline; + ETEC K88 = infusing the ETEC K88; - FSBM = control diet with 24% soybean meal; + FSBM = test diet with 6% FSBM added at the expense of soybean meal

^a,b Mean values within a row with unlike superscript letters were significantly different (p < 0.05)