Whatever the type of laying house (natural or artificial
light), the golden rule is to never decrease daylength
(interval between lights on and lights off) after start
of lay.
The lighting programme in production should be the
continuation of the lighting programme used during
the rearing period. It is essential to make sure that the
light duration in production house is as long as the
light duration the birds have already experienced in the
rearing house just before transfer.
As the bodyweight plays a major role in the determination
of the egg weight profile during all the laying period,
the light stimulation has to be done according to the
observed bodyweight. The minimum bodyweight
reference is:
• 1 250 to 1 300g for the brown egg layers
• 1 100 to 1 150g for the white egg layers