Table 3. Pathway analysis results of trait-related metabolites.

Pathways	Matched Metabolites	P value a	Impact value b
Alanine, aspartate and glutamate metabolism	Glutamic acid; Aspartic acid	9.36×10-4	4.4×10-1
Nitrogen metabolism	Glutamic acid; Aspartic acid	2.48×10-3	6.7×10-4
Histidine metabolism	Glutamic acid; Aspartic acid	3.15×10-3	5.1×10-4
Aminoacyl-tRNA biosynthesis	Glutamic acid; Aspartic acid	9.01×10-3	1.1×10-2
Arginine and proline metabolism	Glutamic acid; Aspartic acid	9.49×10-3	3.6×10-2
D-Glutamine and D-glutamate metabolism	Glutamic acid	2.27×10-2	1.1×10-1
Cyanoamino acid metabolism	Aspartic acid	3.28×10-2	0
Ether lipid metabolism	Glycerophosphocholine	4.69×10-2	0

^a. P values from the pathway enrichment analysis.

^b. Impact values from the pathway topology analysis.