An egg weights about 60g in average, and a hen 3kg, how the hen can produce every day something about 2% of it’s weight like this? Which kind of metabolism the hen have to achieve this?
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We‘ve bred them to this point.
Chicken are Gallus Gallus Domesticus. Their wild counterparts are other Gallus Gallus subspecies, commonly called junglefowl. These lay an estimated 10-20 eggs a year in the wild.
Over the millennia we‘ve always chosen those chicken that lay the most eggs, so now we have hens laying an egg almost every day. Layer hens are fed a lot. Their existence is basically eating, laying eggs, eating, laying eggs.
They eat around 100 to 150 grams of feed each day. That‘s 5% of their bodyweight. For comparison an average human eats roughly 1.2kg per day, with an average weight of 80kg thats less than 2%
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