Table 1.

Metabolites contributing to the clustering of each group along PC1 and PC2 on the PCA score plot, and p values showing significant differences by one-way ANOVA among the three cattle herds.

	Metabolite	PC1	PC2	p Value
ATP generation	xylitol	0.88		0.12
	pantothenic acid	0.79		0.63
	galactose	0.59		0.79
	myo-inositol	0.56		0.51
	aconitic acid	0.54		0.55
	glucose	0.53		0.78
	isocitric acid	0.53		0.50
	lactate		−0.87	0.038
	lactose		−0.84	0.03
	lyxose		−0.59	0.47
	xylitol		−0.50	0.80
Organic acid	hydroxyisovaleric acid	0.64		0.48
	methyl succinic acid	0.66		0.32
	ethylhydracrylic acid		−0.69	0.19
	phenaceturic acid		−0.63	0.35
Amino acid	threonine	0.78		0.08
	lysine	0.64		0.31
	taurine	0.52		0.028
	tyrosine	0.86		0.36
	oxoproline (pyroglutamic acid)	0.70		0.38
	tryptophan	0.74		0.32
	phosphocolamine	0.73		0.0008
	serine	0.62	−0.61	0.09
Glycin-conjugate	butyrylglycine	0.76		0.70
	hippurate	0.75		0.66
	methylbutyrylglycine	0.62		0.82
Purine base	ribofuranose	0.76		0.003
	allantoin		−0.56	0.011
	β-pseudouridine	0.85		0.87
	uric acid	−0.60	−0.58	0.23
Dietary plant-derived	adonitol	0.88		0.87
	threitol	0.88		0.87
	cinnamate	0.82		0.30
	hydroxyphenyllactate	0.82		0.48
	glycolic acid	0.56	−0.48	0.75
	indol-3-acetic acid	0.54		0.54
	galacturonic acid		−0.66	0.002
	hippuric acid		−0.67	0.0002
	deoxytetronic acid	0.95		0.53
	threonic acid	0.90		0.68
	gluconic acid	0.88		0.77