Eggs are one of the animal foods consumed in addition to meat, fish and milk. Generally the eggs are derived from bird species, such as chicken, duck, and goose, but smaller eggs such as fish eggs are sometimes also used as a mixture in the dish (caviar). Also consumed also large eggs such as egg ostrich (Kasuari) or medium, such as turtle eggs. Most chicken egg products intended for consumption of people are not sterilized, given the laying hens that produce it is not accompanied by male chickens. Sterilized eggs can also be ordered and eaten as unsterilized eggs, with little difference in nutritional content. Sterilized eggs will not contain embryos that have developed, as refrigerators prevent the growth of cells in eggs.
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