RFM	retained fetal membranes
NEB	negative energy balance
DMI	dry matter intake
GLU	glucose
NEFA	non-esterified fatty acid
βHB	β-hydroxybutyric acid
LAC	lactic acid
LDH	lactic dehydrogenase
AST	aspartate aminotransferase
ALT	alanine aminotransferase
CK	creatine kinase
BUN	blood urea nitrogen
TBIL	total bilirubin
SOD	superoxide dismutase
GSH-Px	glutathione peroxidase
CAT	catalase
MDA	malondialdehyde
PLS-DA	Partial Least Squares Discriminant Analysis
DMs	differential metabolites
KEGG	Kyoto Encyclopedia of Genes and Genomes
Gpcho	phosphatidylcholines
Pc	Phosphatidylcholine
Ps	Phosphatidylserine
Dg	diacylglycerols