Table 2.

Discriminant genera among treatments for pig gut microbiomes at d 21 and 42

Time-point	Genus1	Treat-ment2	Indicator value	Average relative abundance for Con, %	Average relative abundance for Preb, %	Average relative abundance for Preb + ZnCu, %	P-value3
d 21	o__Clostridiales.f__Clostridiaceae.g__Clostridium	Con	0.54	${0.42}^a$	${0.05}^b$	${0.26}^a$	< 0.05
d 21	o__Clostridiales.f__Clostridiaceae.g__	Con	0.53	${4.32}^a$	${0.52}^b$	${3.33}^a$	< 0.05
d 21	o__Clostridiales.f__Clostridiaceae.g__SMB53	Con	0.51	${1.26}^a$	${0.15}^b$	${1.04}^a$	< 0.05
d 21	o__Clostridiales.f__Veillonellaceae.g__Dialister	Preb	0.74	${0.08}^a$	${0.95}^b$	${0.25}^a$	< 0.05
d 21	o__Pirellulales.f__Pirellulaceae.g__	Preb	0.69	${0.09}^a$	${0.53}^b$	${0.01}^a$	< 0.05
d 21	o__Bacteroidales.f__p.2534.18B5.g__	Preb	0.66	${0.04}^a$	${0.20}^b$	${0.03}^a$	< 0.05
d 21	o__Clostridiales.f__Veillonellaceae.g__Acidaminococcus	Preb	0.61	${0.26}^a$	${1.27}^b$	${0.56}^{\mathit{ab}}$	< 0.05
d 21	o__Clostridiales.f__Veillonellaceae.g__Megasphaera	Preb	0.59	${0.75}^a$	${4.47}^b$	${2.35}^{\mathit{ab}}$	< 0.05
d 21	p__Cyanobacteria.c__4C0d.2.o__YS2.f__.g__	Preb	0.59	${0.38}^{\mathit{ab}}$	${0.96}^a$	${0.19}^b$	< 0.05
d 21	o__Clostridiales.f__Christensenellaceae.g__	Preb	0.58	${0.79}^a$	${1.63}^b$	${0.42}^a$	< 0.05
d 21	o__Lactobacillales.f__Lactobacillaceae.g__Lactobacillus	Preb	0.57	${3.11}^a$	${11.0}^b$	${5.04}^a$	< 0.05
d 21	o__Clostridiales.f__Lachnospiraceae.g__Oribacterium	Preb	0.55	${0.13}^a$	${0.40}^b$	${0.20}^a$	< 0.05
d 21	o__Clostridiales.f__Veillonellaceae.__	Preb	0.55	${0.06}^a$	${0.74}^b$	${0.30}^a$	< 0.05
d 21	o__Clostridiales.f__Veillonellaceae.g__Mitsuokella	Preb	0.53	${0.42}^a$	${1.37}^b$	${0.81}^{\mathit{ab}}$	< 0.05
d 42	o__Clostridiales.f__Clostridiaceae.g__SMB53	Con	0.46	${1.24}^a$	${0.64}^b$	${0.82}^{\mathit{ab}}$	0.07
d 42	o__Erysipelotrichales.f__Erysipelotrichaceae.g__p.75.a5	Preb + ZnCu	0.45	${0.04}^a$	${0.08}^{\mathit{ab}}$	${0.15}^b$	0.09

¹Listed taxa were selected on the basis of having indicator value scores of at least 0.4, and significant differences in average relative abundances between parity groups. Taxa are sorted by treatment group and then by indicator value. Listed taxa are identified to the genus (g) level, or represent unidentified genera within the listed family (f), order (o), class (c), or phylum (p), where applicable

²Treatment designations represent the dietary treatment group the listed taxa is enriched in

³P-values represent Kruskal Wallis tests among treatment groups

^a,bDiffering letter superscripts denote significant differences among groups (P < 0.05)