Poultry
Around 8,000 years ago in Southeast Asia, people began keeping the red junglefowl. Genomic studies confirm this timeline, correcting earlier beliefs that domestication happened only 5,400 years ago. Archaeological evidence supports chicken presence in Southeast Asia before 6000 BC and in China by 6000 BC. The process likely started when humans collected wild eggs to hatch young birds. Later, they kept these birds permanently in captivity for food security. Selective breeding over centuries created modern breeds that look very different from their ancestors. A landmark 2020 study sequenced 863 chickens worldwide to trace origins back to a single event involving red junglefowl. These birds spread across Southeast and South Asia, interbreeding with local wild species. Chickens traveled with Austronesian migrations into Taiwan and Island Melanesia starting around 3500 to 2500 BC. By 2000 BC, they reached the Indus Valley and arrived in Egypt 250 years later. Romans used them for divination while Egyptians mastered artificial incubation techniques. Ducks were domesticated in the Far East at least 1,500 years before Western Europe. Clay models found in China date back to 4000 BC during the Yangshao culture. Turkeys were first domesticated by pre-Aztec tribes in south-central Mexico around 800 BC. Pueblo Indians on the Colorado Plateau followed suit around 200 BC. Guinea fowl originated in southern Africa and was domesticated by ancient Greeks and Romans.
Over 50 billion chickens are raised each year as a source of meat and eggs globally. Sixteen billion birds are raised annually for consumption, with more than half produced in industrialized units. Global broiler meat production rose to 84.6 million tonnes in 2013. The United States accounted for 20% of this total, followed by China at 16.6%. Brazil contributed 15.1% and the European Union made up 11.3%. Poultry accounts for about 30% of total meat production worldwide compared to pork at 38%. World duck meat production reached 4.2 million tonnes in 2011, with China producing two-thirds of that amount. France leads Western duck production at 3.5%, while other EU nations contribute 3%. China holds a 94% share of the global goose and guinea fowl market totaling 2.6 million tonnes. Global egg production reached 76.7 million tonnes in 2018, representing a 24% growth since 2008. Between 2000 and 2010, egg production grew at around 2% per year before slowing down. Two distinct models exist: the European Union supply chain seeks traceability back to the farm of origin. The United States model turns poultry into a commodity. Profitability depends heavily on feed prices which have been rising steadily. High feed costs could limit further development of poultry production in developing regions.
Battery cages often set in multiple tiers restrict movement for several birds sharing a small space. These cages became illegal in the EU starting the 1st of January 2012. Broilers can grow to acceptable carcass size within six weeks or less. Their legs sometimes cannot support their weight as they develop rapidly. Mortality rates reach 1% in intensive systems compared to less-intensively reared laying birds taking 18 weeks. Processing happens automatically with conveyor-belt efficiency inside little over two hours. Cannibalism, feather pecking, and vent pecking are common issues in intensive systems. Some farmers use beak trimming as a preventative measure against these behaviors. Barn systems have been found to have the worst bird welfare outcomes overall. In Southeast Asia, lack of disease control in free-range farming links to avian influenza outbreaks. Ducks are more popular than chickens in the East where they find food in harvested rice fields. Geese thrive on grass-based systems but deposit fat subcutaneously containing mostly monounsaturated fatty acids. Over 75% of world foie gras production occurs in France, Hungary, Bulgaria, and China. The force-feeding process required for this product is banned in many countries on animal welfare grounds.
Cockfighting remains the world's oldest spectator sport despite being banned in many nations during the last century. Two mature males fight until one is critically injured or killed. Breeds like the Aseel were developed in the Indian subcontinent specifically for aggressive behavior. Poultry shows emerged after cockfighting became illegal to maintain competitive elements in husbandry. The annual National Championship Show in the United Kingdom organizes breed standards for egg-laying and meat-type birds. Foie gras represents a luxury item produced by force-feeding geese and ducks. Traditional dishes vary widely across cultures with specific regional preferences. Buffalo wings serve as a popular example of wing preparation in the United States. Japanese cuisine separates wings into teba-moto and teba-saki segments. Squabs grow rapidly from pigeon eggs incubated about 17 days before hatching. Young squabs are ready at 26 to 30 days weighing approximately 450 grams. They feed on pigeon milk secreted high in protein by parent crops. Dark meat contains myoglobin used for sustained walking activity while white muscle suits short bursts. Ducks and geese possess red muscle throughout due to flight capabilities unlike chickens. Bantams remain small varieties kept by hobbyists for ornamental purposes or showing.
Chicken meat contains two to three times more polyunsaturated fat than most red meats by weight. Boneless skinless chicken breast holds less fat but provides high-quality protein. A portion of raw chicken breast contains roughly 3 grams of fat and 31 grams of protein. The same portion of raw beef flank steak offers 8 grams of fat and 26 grams of protein. A 2011 study found 47% of US grocery store poultry was contaminated with Staphylococcus aureus. Resistance to antibiotics appeared in 52% of those bacteria samples. Thorough cooking kills these bacteria though cross-contamination risks persist during handling. Salmonella and Campylobacter infections pose additional threats if products are improperly cooked. Avian influenza remains a bird-specific virus not normally transferred to humans. People contacting live poultry face the greatest infection risk especially in Southeast Asia. Millions of eggs generate annual flu vaccines through complex six-month processes. Egg allergies prevent some people from receiving immunizations via this method. Cell-based culture techniques offer alternatives for pandemic scenarios requiring large sterile egg quantities.
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Common questions
When did humans first start keeping red junglefowl?
People began keeping the red junglefowl around 8,000 years ago in Southeast Asia. Genomic studies confirm this timeline and correct earlier beliefs that domestication happened only 5,400 years ago.
Where were chickens first domesticated according to archaeological evidence?
Archaeological evidence supports chicken presence in Southeast Asia before 6000 BC and in China by 6000 BC. The process likely started when humans collected wild eggs to hatch young birds.
Which countries produce the most poultry meat globally today?
The United States accounted for 20% of global broiler meat production followed by China at 16.6%. Brazil contributed 15.1% and the European Union made up 11.3% of the total.
When did battery cages become illegal in the European Union?
Battery cages became illegal in the EU starting the 1st of January 2012. These cages often set in multiple tiers restrict movement for several birds sharing a small space.
How long does it take for broilers to reach acceptable carcass size?
Broilers can grow to acceptable carcass size within six weeks or less. Their legs sometimes cannot support their weight as they develop rapidly.