Most of the popular egg laying breeds reach peak production of eggs at about 18 months old and are culled within the second year.
Yes. Most grain/feed stores have special layer complete feed that gives the new pullet the extra calcium and protein needed for good egg production. Hens raised for egg production should be started on this feed about one month before expected egg production. This means they can be switched from chick grower, over to layer mash or pellets at about 12 to 16 weeks of age.
Resting a hen for a second laying production is called a molt. Chickens do not produce eggs when they are growing their new feathers.
Normally, yes, not an issue.
Most pullets will begin laying eggs at about 16 to 24 weeks. Egg production peak before age 2 and drop from there. Most hens will stop production at around age 3 with only the occasional egg offered after that. There have been reports of hens laying well past 5 years old but these are exceptions rather than normal.
23 weeks
Egg production varies with the breed of chicken. In general, chicks start their egg laying at about 5 to 6 months old and reach peak production at about two years. Egg laying starts to decline at about three years. As the chicken ages, egg production is less reliable until they stop completely. Non productive chickens can live up to as old as 12 years.
Ducks usually incubate their eggs for about 28 days
normally about 2-3 months
Sick and deformed chicks are often culled if the farmer or hatchery can see no way to save the chick. A deformed chick would not usually survive in a flock as chickens always do their own culling. The weak birds are targeted by the healthy, stronger birds. Roosters are also culled at hatcheries if their intent is to produce just laying hens. More and more hatcheries are now separating the males to be sold off as meat birds rather than culling as was the practice years ago.
Normally the interior doors are hung before the plaster goes up. Doors attach directly to studs in the walls, so they usually go up before the plaster. With wood floors, they are normally the last thing to be laid - even after the painting.
Khaki Campbells typically lay eggs consistently until around 2-3 years of age, after which their egg production may decline. However, factors such as diet, health, and environment can impact their laying longevity.
They shouldn't effect the process of laying eggs. It's always up to the hens attitude for that day.