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?
In: 32
Years of selective breeding.
The Red Jungle Fowl (almost certainly the ancestor of all modern chooks) have some sub-species that breed throughout the year, so lay eggs through out the year (yay! tropics).
These birdy-birds were domesticated at least ~~80,000~~ 8,000 years ago, and over that period of time they were selectively bred to lay almost daily.
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