Question

why eggs are white in colour?

Answer 1

There's also no difference in yolk or taste. As for shell color: Genes determine shell color, Dr. Bui said. White-feathered chickens with white earlobes lay white eggs; red or brown ones with red earlobes lay brown eggs; and the Ameraucana breed, also known as the Eastern egg chicken, lays eggs with blue shells.

Answer 2

Shell color comes from pigments in the outer
layer of the shell and, in eggs from various
commercial breeds, may range from white to
deep brown. The breed of hen determines the
color of the shell. Among commercial breeds,
hens with white feathers and ear lobes lay
white-shelled eggs; hens with red feathers
and ear lobes lay brown eggs.
White eggs are most in demand among
American buyers. In some parts of the
country, however, particularly in New England,
brown shells are preferred. Commercial
brown-egg layers are hens derived from the
Rhode Island Red, New Hampshire and
Plymouth Rock breeds. Since brown-egg
layers are slightly larger birds and require
more food, brown eggs are usually more
expensive than white.
Egg albumen in raw eggs is opalescent and
doesn’t appear white until you beat or cook