Table 4. Differential metabolites in jejunal luminal content of weaned piglets between different treatments.

Metabolites	R.T.	Mass	Differential metabolites in jejunal luminal content		VIP	p-value	Fold change
			BFLD group	BCPD group
Fucose	16.08	117	0.0218 ± 0.00	0.1005 ± 0.03	1.86	0.034	0.22
2-hydroxybutanoic acid	8.26	131	0.0089 ± 0.00	0.0645 ± 0.02	2.03	0.017	0.14
3-hydroxypropionic acid	8.51	177	0.0133 ± 0.00	0.0039 ± 0.00	2.00	0.008	3.41
Glycine	8.20	102	0.1204 ± 0.06	0.5064 ± 0.14	1.75	0.028	0.24
Ornithine	16.26	174	0.0150 ± 0.00	0.0487 ± 0.01	2.13	0.012	0.31
Beta-Alanine	12.42	248	0.0108 ± 0.00	0.0193 ± 0.00	2.09	0.005	0.56
Orotic acid	16.14	254	0.0031 ± 0.00	0.0002 ± 0.00	1.93	0.027	15.50
Pipecolinic acid	11.60	156	0.0080 ± 0.00	0.0202 ± 0.00	1.92	0.022	0.40
Spermidine	20.62	200	0.0019 ± 0.00	0.0068 ± 0.00	2.54	0.000	0.28
Putrescine	16.11	174	0.1229 ± 0.03	0.5455 ± 0.13	1.95	0.023	0.23
N-Acetyl-D-galactosamine	19.51	87	0.0108 ± 0.00	0.0198 ± 0.00	1.86	0.017	0.55
Lignoceric acid	25.59	117	0.0087 ± 0.00	0.0235 ± 0.01	1.68	0.038	0.37
Arachidic acid	22.66	117	0.0195 ± 0.01	0.0568 ± 0.01	1.80	0.023	0.34