May 16, 2025
Science

Why are chicken eggs different colors?

  • July 17, 2024
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The colors of the eggs obviously have nothing to do with the color of the chickens. Finally We didn’t see a blue chicken anywhere. What do you think

Why are chicken eggs different colors?

The colors of the eggs obviously have nothing to do with the color of the chickens. Finally We didn’t see a blue chicken anywhere. What do you think could be effective in this color change?

Bride, Let’s answer these questions.

The main factor in eggshell color variation is genetics, but several environmental factors also play a role.

egg

According to scientists in the shells of chicken eggs; 7 different genes called CPOX, FECH, BCRP, HRG1, FLVCR, SLCO1A2 and SLCO1C1 play a role.

The most common egg colors are brown and white. influenced by the production of an organic pigment called protoporphyrin. Biliverdin and biliverdin-zinc can also affect the color of chicken eggs.

But still the most effective is protoporphyrin. In general, the amount of protoporphyrin in white eggs is quite low. It is abundant in brown eggs. A higher elevation of the CPOX gene results in more protoporphyrinogen and thus a brown shell color.

Additionally, different chicken breeds can be associated with certain eggshell colors because they share a certain set of genes.

chicken

For example, while Leghorn chickens lay white eggs, Rhode Island Reds lay brown eggs due to the genetic diversity in the population. The brown color of the eggs of Marans chickens is quite dark.

Egg color depends on genetics; It can be caused by a number of environmental factors, including the age of the chicken, stress levels, illness, and diet. The iron content in the feed of chickens that lay brown eggs is quite striking.

Old age, stress and various diseases can also cause eggs to become less pigmented.

egg

However, white eggs also belong to the chicken, That doesn’t mean he’s sick or unhappy. Likewise, the color of the shell does not determine the taste of the egg.

Furthermore, blue eggs are almost an exception to all the genetic rules we mentioned. Only the Araucana chicken from Chile and the Dongxiang and Lushi chickens from China lay blue eggs and are responsible for this. It’s a gene called Oocyan.

In summary, in this difference in the colors of the eggs, Genes and some environmental factors play a role. When stored under proper conditions, consuming them will not cause any health problems, regardless of their color.

Sources: IFL Science, Michigan State University

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