. 2022 Apr 12;13:831945. doi: 10.3389/fmicb.2022.831945

Table 9.

Effects of trace mineral type (coated or uncoated) and supplementation level (300, 500, or 1,000 mg/kg) of trace minerals on duck cecal microbiota ⍺-diversity.

Trace minerals	Level (mg/kg)	Chao1	Shannon	Simpson
Uncoated	300	423.83^a	6.93^a^,^b	0.97^b
	500	453.83^a	7.46^a	0.99^a
	1,000	323.67^b	6.53^b	0.98^a^,^b
Coated	300	385.00^a^,^b	7.16^a^,^b	0.98^a^,^b
	500	364.33^a^,^b	6.96^a^,^b	0.98^a^,^b
	1,000	412.00^a^,^b	7.12^a^,^b	0.98^a^,^b
SEM		65.578	0.437	0.007
Main effect
Trace minerals	Coated	387.11	7.08	0.98
Trace minerals	Uncoated	400.44	6.97	0.98
Level	300	404.42	7.04	0.98
	500	409.08	7.21	0.98
	1,000	367.83	6.83	0.98
Value of p
Trace minerals		0.569	0.524	0.614
Level		0.296	0.183	0.316
Interaction		0.011	0.036	0.031

^a,b

Means within columns not sharing a common superscript are significantly different at the 5% level of probability.