Genetic analysis of production, physiological, and egg quality traits in heat-challenged commercial white egg-laying hens using 600k SNP array data

Table 3 Heritability (standard error) estimates for production traits

Trait	2 weeks pre-heat^a	Weeks 1–2	Weeks 3–4
Egg production	0.06 (0.1)	0.03 (0.09)	NC^b
Egg mass	0.43 (0.11)	0.30 (0.10)	0.24 (0.10)
Egg weight	0.05 (0.09)	0.16 (0.1)	0.23 (0.12)
Feed intake	0.18 (0.11)	0.31 (0.11)	0.17 (0.1)
Feed efficiency (g feed/g egg)	NC^b	0.23 (0.11)	0.13 (0.1)

ISSN: 1297-9686