Poultry are reared for their meat and eggs.Learn more about电子束加热单击功能区上turkeys，and固定轨道，固定轨道。
电火花头
At the start of 2023，about 64 percent of the over309 million eg-laying hens in the United States were confined tobarren battery cageswhere they are crowded and deprived of the ability to perform natural behaviors such as exploring，nesting，perching，dust bathing，or simply stretching their wings.Birds endure painful beak triming，stand on wire floors that cripple their legs，breathe toxic air，and live their entir lives under untural，dightim。
In spite of the appalling conditions，profit and productivity for the industry remains high because the hens have been genetically selected to produce an excess of eggs-at the expense of their own health and welfare。
高负荷、负荷负荷系数represent a dramatic welfare improvement for egg-laying chickens.They raise modest-sized flocks of chickens who produce eggs at anormal rate.Birds on pasture can run，fly，stretch，and flap their wings，and have access to forage，dust baths，fresh air and sunlight.These egg-laying hens have space to themselves and access to protected nest boxes for laying.Beak（or other）mutilations are prohibited。
Turkeys
Approximately208million turkeys were raised for meat in 2022in the United States，according to the US Department of Agriculture。
Turkeys suffer similar welfare problems as do chickens raised for meat.Industrial turkey farms confine birds inside huge sheds that are often windowless and artificially ventilated.Large industrial operations can house 10，000birds in one building。The birds are packed tightly together with only about2.5square feet for females and 4square feet for males.It is standard practice to perform填充mutilationssuch as beak，toe，and snood（part of the waddle）removal to prevent turkeys from injuring or cannibalizing each other in the intensely crowded quarters。High mortality rates are common；millions of turkeys die on the farm before they can be sent to slaughter。
High levels of ammonia contribute to very poor air quality and painful irritations to the turkeys’feet.Lighting is intentionally kept low to minimize aggression and activity so birds gain weight more rapidly.An especially serious welfare problem is that the turkeys are genetically selected to grow at surmach an surmannot farmaldies cannot keep up.Turkeys grow so big they are unable to mate naturally；the industry must use artificial insemination to breed them.Breeding turkeys have their feed rationed，leaving them hungry，just to keep down the rapid weight gain programmed into their genes so to keep them alive longer。
高负荷、负荷负荷系数represent a dramatic welfare improvement for turkeys.They raise turkeys who mature at a normal rate in modest-sized flocks.Artificial insemination is typically prohibited.Birds on pasture can run，fly，stretch，and flap their wings，and have access to forage，dust baths，fresh air，and suntoght，noode， or other mutilations are usually prohibited。
介质夹头，介质夹头
According to statistics from the USDA，over9.5billion chickens were slaughtered for meat in the United States in 2022。
Industrial meat chicken farms confine birds inside massive，windowless sheds.They are packed tightly together with as little as100square inches of space，in accordance with National Chicken Council guidelines.（The birds would need138square inches to spread just one wing.）Industrial farms may house up to 50000birds in one building.This extreme overcrowding prevents chickens from performing natural behaviors such as pecking，preening，oreven walking around without stepping on other birds。
High levels of ammonia in the litter contribute to extremely poor air quality and painful irritations to the chickens’feet.Lighting is intentionally kept low to minimize aggression and activity，so birds gain weight more rapidly.An especially serious welfare problem is that the birds aregenetically selectedto grow at such an abnormally fast rate that their bodies cannot keep up.Their bones break and organs rupture as chickens reach market weight in just six or seven weeks.Some die of heart failure before that。
高负荷、负荷负荷系数represent a dramatic improvement in the welfare of chickens raised for meat.They raise chickens who mature at a normal rate，in modest-sized flocks.Birds on pasture can run，fly，stretch，and flap their wings，and have access to forage，dust baths，fresh air，and sunlight。
