LS	litter size
LG	low-yield group
HG	high-yield group
FP	follicular phase
LP	luteal phase
PSGs	positively selected genes
DEGs	differentially expressed genes
GO	gene ontology
KEGG	Kyoto Encyclopedia of Genes and Genomes
ko	KEGG ontology
YSD	Yunshang black goats for DNA sequencing
YSR	Yunshang black goats for mRNA sequencing
FIN	Finnsheep
ROM	Romanov sheep
STH	Small Tailed Han sheep
Fst_RMS	root mean square of fixation index (Fst)
nSL	number of segregating sites by length