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Most egg producers will cull the flock when they reach about 18 months old.

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Q: How long do commercial egg producers keep their hens before replacing them with new hens?
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Do commercial poultry suppliers raise hens or roosters?

Hens.


What happens to commercial hens after they pass peak laying?

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Ex battery hens are hens that have come from a commercial "Egg Factory". They have set in a wire cage all their life, and probably haven't walked in over a year.


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There is no reason except the chefs preference not to roast hens in any commercial kitchen. Most kitchens never know if the roaster they are cooking is a male or female chicken. Roasting birds are slaughtered and processed at about 6 to 10 weeks old depending on weight and can be male or female. Where ever you heard this from was probably due to a supplier substituting aged out laying hens for roasters. Old laying hens are often sold off as meat and are called stewing hens. Trying to roast the older hens does not work, they are too tough and the meat fiber does not break down well roasted. They must be boiled.


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