A team of Japanese researchers has come up with a system that replaces the eggshell of domestic white leghorn chickens ...

A team of scientists has developed a system for culturing eggs that replaces the opaque eggshell of domestic white leghorn ...

Most of the brown eggs in the U.S. are produced by a type of chicken breed called Rhode Island Red or Plymouth Rock, while many of the white eggs are made by White Leghorn chickens, he says ...

Generally laid by white birds with white earlobes Common U.S. breed is White Leghorn chickens “For chickens that lay brown eggs, a pigment protein called protoporphyrin is added as the eggshell ...