Eggshell color question


7 Years
Apr 25, 2012
Washington Co. AL
what gives eggs shell their color. this is a serious question. so please no white chicken white eggs. i have seen green eggs but never green chickens. is it melanin like in human skin or what?
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Genetics. Color is applied to the egg just before being layed..
I read the whole process quite a while ago.
Maybe someone else will remember the more technical details.
The brown color on an egg is due to a pigment called protoporphyrin-IX. This pigment is made from parts of old blood cells that are no longer functional. The blue pigment in a shell is caused by biliverden-lX which is also made from old blood cells. White eggs do not have any pigment on them.

Melanin production is completely different and has no relationship with egg shell pigmentation.

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