2. The hen's egg
2.1 Shell color
It's all a question of the breed of hen, and feed plays no part. These are the Leghorns, small, highly productive white hens that lay white-shelled eggs. So do Bresse hens.
White shells are translucent when candled, making it easier to eliminate internal defects such as blood spots. White-shelled eggs need to be produced cleanly, as the stains are very visible. The USA has solved this problem by washing...
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The hen's egg
Egg products
Economic data
Bibliography
Documentation and list of producers and manufacturers
Institut technique de l'aviculture ITAVI, Paris
French Ministry of Agriculture and Fisheries
Direction générale de l'alimentation DGAL, Paris
Equipment manufacturers (non-exhaustive list)
Egg sorting, weighing and packing machines
MOBA/Scholtz.
Egg-breaking machines, dryers, etc.
Sanovo Engineering A/S
Vacuum packaging machines
Multivac France.
Machines for cooking, peeling and counting hard-boiled eggs
...
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