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The theory gained steam on Facebook, TikTok and Twitter in recent weeks, with some users reporting that their hens stopped laying eggs and speculating that common chicken feed products were the cause.
In 1900, average egg production was 83 eggs per hen per year. In 2000, it was well over 300. In the United States, laying hens are butchered after their second egg laying season. In Europe, they are generally butchered after a single season. The laying period begins when the hen is about 18–20 weeks old (depending on breed and season).
Organic egg production is the production of eggs through organic means. In this process, the poultry are fed organic feed. In this process, the poultry are fed organic feed. According to the United States Department of Agriculture, organic means that the laying hens must have access to the outdoors and cannot be raised in cages. [ 1 ]
Depending on breed, egg production starts at 24–26 weeks of age. Production percentage (daily eggs per hen) climbs rapidly to a peak of 80–85% at 29–32 weeks, and then gradually declines with age. Hatchability tends to peak (at perhaps 90%) somewhat later than production at 34–36 weeks. [20]
[2] [3] Chickens raised for eggs are known as layers, while chickens raised for meat are called broilers. [4] In the United States, the national organization overseeing poultry production is the Food and Drug Administration (FDA). In the UK, the national organisation is the Department for Environment, Food and Rural Affairs (DEFRA).
Hens begin laying eggs around the age of five months. "Once a hen is five months old it can lay about one egg per day," said Penfield. Presently, there are no vaccines or medical treatments ...
Chickens in multiple-occupancy battery cages. Battery cages are a housing system used by factory farms for various animal production methods, but primarily for egg-laying hens. The name arises from the arrangement of rows and columns of identical cages connected, in a unit, as in an artillery battery. Although the term is usually applied to ...
For hens used in egg production in the US, as of 2011 the FCR was about 2, with each hen laying about 330 eggs per year. [25] When slaughtered, the world average layer flock as of 2013 yields a carcass FCR of 4.2, still much better than the average backyard chicken flock (FCR 9.2 for eggs, 14.6 for carcass).