Introduction: The Importance of Eggshells

Eggshells are an essential part of an egg that protects the developing embryo, provides a source of calcium and other minerals, and prevents bacterial and fungal infections. Eggshells also play a crucial role in the preservation and transportation of eggs, making them a vital commodity in the food industry. However, some hens may lay eggs without shells, which can be a concern for farmers and consumers alike. In this article, we will explore the science behind eggshell formation, the factors that affect it, and how to ensure proper eggshell development.

The Science behind Eggshell Formation

Eggshell formation is a complex process that involves various physiological and biochemical mechanisms. After a hen lays an egg, the eggshell begins to form in the uterus or oviduct, where it undergoes a series of structural and chemical changes. The eggshell consists of a thin outer membrane, a thick calcareous layer, and an inner membrane that surrounds the egg white and yolk. The calcareous layer contains about 94% calcium carbonate, along with other minerals such as magnesium, potassium, and sodium. The process of eggshell formation takes about 20 hours, during which the egg passes through the oviduct and receives nutrients and hormones that regulate its development.