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The United States raises and slaughters almost 10 times more birds than any other type of animal. Approximately 8.5 billion chickens are killed for their meat every year, while another 300 million chickens are used in egg production. All birds—egg-laying hens, meat chickens, turkeys, ducks, geese and others—are excluded from all federal animal protection laws. By the numbers, these are the animals most urgently in need of protection. The ASPCA is focused on raising public awareness about the plight of chickens raised for meat and is working actively with companies that buy or raise chickens toward the adoption of better practices.
Many people do not realize that the breed of chicken used for modern egg production is different than the breed used for meat production. If you put them next to each other, they look almost nothing alike! Each has been strategically bred for hyper-production: egg-laying hens for high egg volume, and “meat” chickens for maximum breast meat. Both types suffer from severe physical problems brought on by genetic manipulation.
To keep them eating and growing, factory farms restrict chickens’ sleep by keeping the lights on almost all the time. As they grow, meat chickens become crowded together, competing for space. This constant interaction makes sleep even harder. As chickens die, their bodies are sometimes left among the living, adding to the stress and unhygienic conditions. Learn much more about this issue in our paper, A Growing Problem.
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Progress for Chickens
Egg-Laying Hens
Most egg-laying hens in the U.S. live on factory farms in long, windowless sheds containing rows of stacked “battery cages.” Up to 10 hens are packed together in one wire cage roughly the size of a file drawer. The frustration of living in such tight quarters sometimes leads to fighting. To lessen this problem, factory farms burn or slice off a portion of each hen’s beak (without painkillers). Hens who become sick often do not receive veterinary care or proper euthanasia, and are left to slowly die. This is not surprising given that a single shed may house tens of thousands of birds packed closely together, with many stacked in tiered cages that make them difficult to see and access.
Where do egg-laying hens come from? A side-industry exists solely for the purpose of hatching them. Only female chicks will grow up to lay eggs, but half of the chicks born in these hatcheries are male. There is no market for the male chicks, as they are the wrong breed to raise for meat—so shortly after they hatch, they are killed by grinding, gassing, crushing or suffocation.
When a hen’s egg production drops due to age, some farms will withhold proper nutrition for up to two weeks to shock the bird’s body into a final laying cycle. Once this “forced molting” phase is over, a hen is “worth” very little. Some are killed on-farm while others are sent to slaughter, their battered bodies used for food scraps.
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Progress for Hens
The U.S. raises some 100 million pigs for food each year, the vast majority of them on industrial-scale farms known for their crowded, inhumane conditions. At just two to three weeks old, piglets are removed from their mothers and placed in large, windowless sheds without fresh air, sunlight or outdoor access. Their pens are too small and crowded for adequate movement and exercise, and have hard slatted floors that prevent natural behaviors like rooting. Ammonia fumes rise to dangerous, uncomfortable levels due to the pigs’ waste.
Progress for Pigs

Cattle are raised and processed across several distinct industries, all of which, in the U.S., rely heavily on inhumane factory farming.
Beef Cattle
Cattle raised for meat are the only factory farmed animals still raised largely outdoors. However, this does not mean they have pain-free lives. They are branded, castrated and may have their horns removed without painkillers.
Sometime between the ages of six months and one year, most beef cattle are sent to live their last few months in crowded feedlots with hundreds or thousands of others. Without pasture and often without shelter, the cattle must stand in mud, ice, and their own waste.
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Progress for Beef Cattle
Dairy Cows
Most cows used for dairy production are kept indoors, with some having access to outdoor concrete or dirt paddocks. Many are tethered by chains or other materials around their necks in what are called “tie stalls.” Unnaturally high milk production leads to mastitis, a painful bacterial infection causing a cow’s udder to swell. Dairy cows often have up to two-thirds of their tails removed without painkillers. Many producers believe the udder stays cleaner this way, even though this theory has been disproven. The cows are also dehorned and/or disbudded (have their horns, or developing horn material, cut or burned off), generally without painkillers.
Just as with humans, cows only produce milk as a side effect of giving birth. To keep the milk flowing, dairy farms artificially inseminate cows once a year. Their gestation period lasts nine months, so the majority of dairy cows’ lives are spent pregnant. When a calf is born, he or she is removed from the mother—generally that same day—to make the mother’s milk available for collection. This is very traumatic to mother cows and to their calves. Male offspring are often raised for veal, while females become the next generation of dairy cows.
While large-scale dairy operations are typically separate from beef cattle operations, these industries are connected. Dairy cows usually meet their ends at beef slaughterhouses when, at just two to five years of age, their milk production has slowed or they are too crippled or ill to continue in the industry. At that point, they are slaughtered for beef.
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Progress for Dairy Cows
Veal Calves
Veal is the meat of young male cattle born to dairy cows. As males, veal calves are of little use to the dairy industry, and as a dairy breed, they are inefficient beef producers.
Traditional veal meat was made pale and tender by restricting calves’ diets and keeping them in stalls so small they could barely move. Increasingly, calves are housed in groups beginning at about six weeks old, but they still lack sufficient space, outdoor exercise, solid food and even the fulfillment of a most basic instinct: the need to suckle.
At an age when they would normally be nurtured and protected by their mother, veal calves are often forced to live alone with no physical contact with other cattle. And while calves normally explore their world by grazing, playing and socializing, factory-farmed veal calves are generally kept indoors with few if any environmental enrichments.
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Progress for Veal Calves

Approximately 238 million turkeys are raised for meat in the U.S. annually. Like chickens, most turkeys are housed in groups on the floors of long sheds where they are denied fresh air, sunshine and pasture. They are forced to breathe dangerously high levels of ammonia emanating from their own waste.
Modern, factory-farmed turkeys look very little like their wild ancestors. For one, they are disproportionately breast-heavy (a result of genetic selection), reflecting a consumer preference for breast meat, and selective breeding has resulted in extremely accelerated growth. Their unnaturally fast and disproportionate growth causes turkeys extraordinary suffering, including pain and difficulty simply walking or breathing.
Turkeys’ bodies have become so unnaturally disproportionate that they can no longer mate with one another. They are bred year-round via artificial insemination, damaging their bodies that were only meant to reproduce once per year.
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Progress for Turkeys