Table 2 Genetic gain per year in the reference scenario, expressed in genetic standard deviations

Single cage

Laying performance 1

0.074

Laying performance 2

0.389

Laying performance 3

0.497

Laying performance 4

0.422

Egg weight

0.116

Feed consumption*

0.033

Egg shell strength

0.240

Hatchability

0.025

Mortality*

−0.116

Group cage

Laying performance 1

−0.008

Laying performance 2

0.215

Laying performance 3

0.199

Egg weight

0.116

Egg shell strength

0.166

Mortality*

−0.041

Feathering quality

0.116

Practical environment

Laying performance 1

0.091

Laying performance 2

0.174

Laying performance3+4

0.166

Egg weight

0.116

Egg shell strength

0.248

Mortality*

−0.149