. 2020 Jul 7;6(3):269–277. doi: 10.1016/j.aninu.2020.04.004

Table 6.

Estimation of diversity within different gut segments after enterotoxigenic Escherichia coli F4 (K88⁺) challenge in weaned pigs.

Item	Treatments¹					SEM²	P-value
Item	PC	NC	FA	P1	P2	SEM²	P-value
Ileum
Chao	182	210	203	216	253	44.8	0.85
Observed species	119	144	154	144	199	43.5	0.77
Shannon	2.04	1.14	2.29	1.60	2.55	0.58	0.48
Simpson	0.55	0.29	0.48	0.42	0.78	0.12	0.12
Cecum
Chao	342^a	310^a	324^a	335^a	253^b	19.4	0.04
Observed species	277^a	256^ab	257^ab	271^a	199^b	16.6	0.04
Shannon	5.47	5.38	4.84	5.11	4.60	0.30	0.25
Simpson	0.96	0.95	0.89	0.92	0.89	0.03	0.28
Colon
Chao	393^a	396^a	329^b	341^ab	311^b	22.1	0.06
Observed species	323^a	310^ab	270^bc	277^abc	257^c	17.0	0.08
Shannon	5.89^a	5.89^a	4.95^b	5.13^ab	4.98^b	0.27	0.05
Simpson	0.96	0.97	0.89	0.92	0.90	0.02	0.20

^a,b,cDifferent superscripts within a row indicate a significant difference (P < 0.05).

PC, non-challenged positive control; NC, enterotoxigenic E. coli F4 (K88⁺)-challenged (on d 7) negative control; FA, NC + kitasamycin at 50 mg/kg + olaquindox at 100 mg/kg + regular free acids at 5 g/kg; P1, NC + kitasamycin at 50 mg/kg + olaquindox at 100 mg/kg + micro-encapsulated combination of organic acids and essential oils at 1 g/kg; P2, NC + kitasamycin at 50 mg/kg + olaquindox at 100 mg/kg + micro-encapsulated combination of organic acids and essential oils at 2 g/kg.

SEM means standard error of the means (n = 4).