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FILE - Eggs are displayed on store shelves at a local grocery store in Chandler, Ariz., Jan. 21, 2023. Amid soaring egg prices, social media users are claiming that common chicken feed products ...
Older hens gradually produce fewer eggs, and the eggs are usually larger. [1] Since the average lifespan of a pet layer hen is 8–15 years, [2] henopause has received attention as a potential problem for backyard or urban chicken farmers who are eventually faced with the decision to either slaughter older layers or keep them as non-producing pets.
Because male chickens do not lay eggs and only those in breeding programmes are required to fertilise eggs, they are considered redundant to the egg-laying industry and are usually killed shortly after being sexed, which occurs just days after they are conceived or after they hatch. [3]
While a single specific cause is unknown, chronic egg laying is believed to be triggered by hormonal imbalances influenced by a series of external factors. [1] As in the domestic chicken, female parrots are capable of producing eggs without the involvement of a male – it is a biological process that may be triggered by environmental cues such as day length (days becoming longer, indicating ...
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.
That same week, the virus infected an egg laying farm in Cache County, Utah, costing the farmer 1.8 million chickens, while another 839,700 egg-layers were killed in Franklin County in Washington ...
Hens of some breeds can produce over 300 eggs per year; the highest authenticated rate of egg laying is 371 eggs in 364 days. [86] After 12 months of laying, the commercial hen's egg-laying ability declines to the point where the flock is commercially unviable.
Abnormal eggs, EDS '76. Egg drop syndrome '76 (EDS '76) is a viral disease that affects birds, notably chickens, ducks, geese and swans.It is characterised by a sudden drop in production of eggs as well as its eggshell quality in apparent healthy laying birds.