AFE	age at first egg
AELT	age at the end of the laying test
BM	body mass
BW	body weight
BWFE	body weight at first egg
ELI	egg-laying interval
EN	egg number
EN1/EN2/EN4/EN500	egg number measured in the indicated period or dataset-specific interval
EW	egg weight
EPT	egg production traits
GWAS	genome-wide association studies
MCD	maximum consecutive egg-laying days
MCL	maximal clutch length
MCST	mean clutch size trait
QTL	quantitative trait locus
RIR	Rhode Island Red
RW	Russian White
SNP	single-nucleotide polymorphism
TWAS	transcriptome-wide association study
W2	Dongxiang Blue-shelled line
WFE	weight at first egg
WGS	whole-genome sequencing
WL	White Leghorn