1. Egg weight in the W light was the heaviest, whereas egg weight in the R light was generally
smaller than those in other lights. Therefore, the R light should be used in producing small
size eggs, whereas the W light should be used in producing large size eggs.
2. The B light causes the length and width of the egg to become shorter and changes the shape
of the egg. The B light causes the egg shape to gradually become round with age. The R
light causes the width of the egg to become shorter and gradually changes the egg shape into
a more slender and oval shape with age. The above changes make the increasing tendency
for the egg weight in B and R lights to become lower than those in W and G lights with age.
3. The G light has the most profound effect on eggshell quality. Therefore, if producing a quality
eggshell is required, then the G light must be implemented.