RNA-seq	RNA sequencing
SD	short-day
LD	long-day
HPG	hypothalamus-pituitary-gonad
GnRH	gonadotropin releasing hormone
LH	luteinizing hormone
FSH	follicle stimulating hormone
STH	Small Tail Han sheep
TSA	Tan ewes in spring at anestrous stages
TAL	Tan ewes in autumn at luteal phase
TAP	Tan ewes in autumn at proestrus stage
TAE	Tan ewes in autumn at estrus stage
HSL	STH ewes in spring at luteal phase
HSP	STH ewes in spring at proestrus
HSE	STH ewes in spring at estrus stage
HAE	STH ewes in autumn at estrus stage
GO	Gene Ontology
DE mRNAs	Differentially Expressed mRNAs
Co-DE mRNAs	Co-Differentially Expressed mRNAs
PPI	protein-protein interaction
BP	biological process
CC	Cellular component
MF	Molecular function
CDC20	cell division cycle 20
TOP2A	DNA topoisomerase II α
EEF2	eukaryotic translation elongation factor 2
DLGAP5	DLG associated protein 5
CCNB2	cyclin B2
RPL23	ribosomal protein L23
HPO	hypothalamus-pituitary-ovarian
HPGA	hypothalamic-pituitary-gonadal axis
ODC1	ornithine decarboxylase 1
PRLH	prolactin releasing hormone
CRYBB2	crystallin β B2
RPS6	ribosomal protein S6
SMAD5	SMAD family member 5
FBXL7	F-box and leucine rich repeat protein 7
TPH1	tryptophan hydroxylase 1
MITF	melanocyte inducing transcription factor
DHCR24	24-dehydrocholesterol reductase
MPA	medial preoptic area
BMP	bone Morphogenetic protein
MLT	melatonin