Always check this when buying eggs.

 

It is written as 0429 22G204.

 

The four digits at the beginning indicate the laying date.

The subsequent five digits or characters represent the manufacturer's unique identification number.

 

The last digit represents the breeding environment.

 

Number 1 is a radial, free environment.

 

Number 2 is a flat type, an environment where one can walk inside and outside the cage.

 

Numbers 3 and 4 refer to narrow cages.

 

As the number 4 increases, the breeding environment worsens.

 

Considering the rearing environment of the eggs

 

It is recommended to choose options 1 or 2 for the final digit whenever possible.

 

But sold at the supermarket

 

Most eggs end with 4 or 3.