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The egg packing room and storage rooms are kept segregated to reduce contamination. The trolleys are delivered by truck to a hatchery perhaps twice a week. [citation needed] At the end of the production cycle, the birds are called "spent fowl". Disposal of spent fowl may be a problem as consumer demand for them is poor. [21]
Chickens are exposed to artificial light cycles to stimulate egg production year-round. In addition, it is a common practice to induce molting through manipulation of light and the amount of food they receive in order to further increase egg size and production.
Poultry farming is the form of animal husbandry which raises domesticated birds such as chickens, ducks, turkeys and geese to produce meat or eggs for food. Poultry – mostly chickens – are farmed in great numbers. More than 60 billion chickens are killed for consumption annually.
Global egg production was expected to reach 65.5 million tonnes in 2013, surpassing all previous years. [62] Between 2000 and 2010, egg production was growing globally at around 2% per year, but since then growth has slowed down to nearer 1%. [62] In 2018, egg production reached 76.7 million tonnes, a huge 24% growth since 2008. [63]
Mass production of chicken meat is a global industry and at that time, only two or three breeding companies supplied around 90% of the world's breeder-broilers. The total number of meat chickens produced in the world was nearly 47 billion in 2004; of these, approximately 19% were produced in the US, 15% in China, 13% in the EU25 and 11% in Brazil.
Improperly stored feed can become compromised and affect egg production, too. “Backyard flock producers don’t necessarily follow lighting programs to support peak egg production,” Anderson said.
Hens and other egg-laying creatures are raised throughout the world, and mass production of chicken eggs is a global industry. In 2009, an estimated 62.1 million metric tons of eggs were produced worldwide from a total laying flock of approximately 6.4 billion hens. [3]
Forced molting typically involves the removal of food and/or water from poultry for an extended period of time to reinvigorate egg-laying. Forced molting, sometimes known as induced molting, is the practice by some poultry industries of artificially provoking a flock to molt simultaneously, typically by withdrawing food for 7–14 days and sometimes also withdrawing water for an extended period.