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 ...

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 ...