Blue Chicken Eggs: All You Need to Know
Blue chicken eggs are related to the Mapuche breed, also known as Araucana, but it is not the only species of hen, also Ameraucana and Collonca breeds produce the famous blue-colored eggs.
These eggs can be blue or greenish, they have a similar amount of nutrients as white eggs. However, as we will see later, blue eggs have a lower cholesterol level and more protein than the rest.
Why are there blue eggs?
The color of the egg can vary, having a hue that ranges from light blue to greenish-blue. But the varieties of its color do not occur by themselves, various agents cause this color change in the shell of the eggs.
The blue color of the peel is due to a pepper called biliverdin. That it is a product of the transformation of hemoglobin. This pigment is incorporated into the egg at t...