Ciekawostka: There are about 2 chickens for every human in the world

Evidence: 51 • authority: 92

Persistent Intestinal Colonisation and Systemic Immune Activation Following Experimental <i>Campylobacter jejuni</i> Infection in Broiler Chickens.. Campylobacteriosis is one of the leading foodborne bacterial illnesses worldwide, with poultry meat representing its principal source of human infection. Broiler chickens are a key reservoir for Campylobacter jejuni , where the bacterium persists in the gastrointestinal tract without disease. Understanding this host-pathogen interaction is essential to clarify mechanisms of persistence and food safety implications. This study investigated persistent C. jejuni colonisation and systemic immune responses in experimentally infected broi…

Evidence: 45 • authority: 62

People think they know lots about chickens, and you’d think they would: There are four living chickens for every living person in the world —and since chickens are domestic fowl (a separate subspecies from their wild ancestor, the red jungle fowl of Southeast Asia), all of them live among humans. Before this experience, Howard’s dad would have been the first to say that he didn’t think chickens were that smart. But they changed his mind. After a few hours, I noticed he had begun addressing them. Picking up a hammer they were examining, he might say, directly and respectfully, “Pardon me, Ladies”—as if he were speaking to my mother-in-law and me when we got in the way. But when their human friends are inside, and this is much of the time, the Ladies explore on their own. Everything you know about chickens is probably wrong. They're much smarter than you think

Evidence: 45 • authority: 62

There are more chickens than any other species of bird on the planet. With three chickens for every human being , they are a food staple for millions of people around the world. But new research shows chickens were domesticated only relatively recently and were once revered . Earlier hypotheses, which based their dates on contextual clues such as where these bones had been located and what other artefacts they were found with, suggested that chickens were present in Europe up to 7,000 years ago. But our results show they were not introduced until around 800 BC (2,800 years ago). This reveals that chickens are a rather recent arrival to Europe, compared to domestic cattle, pigs and sheep which reached Britain around 6,000 years ago. The new dating also suggests that in many locations there was a time-lag of several hundred years from when chickens were first introduced to an area, to them really being thought of as food. Many of the early chickens identified by our radiocarbon dating are complete or almost complete skeletons. In Britain none of the most ancient skeletons show evidence they were butchered for human consumption. They were often older animals , buried alone in pits. One specimen even had a well-healed leg fracture, indicating human care. She was also still able to lay eggs: she had a substance called medullary bone inside her skeleton which is formed during egg production.

Evidence: 45 • authority: 69

What’s more sobering however, is that the global tally is up from only 7.5 billion chickens 55 years earlier. Comparing it to the human population, however, is where it gets really interesting. In 1961 (December figures), there were just over 3 billion people worldwide (data from World Bank). In 2016, the human population was almost 7. 5 billion. This means that in 1961, there were 0.0024 chickens per person, or one chicken for about 400 people globally, whereas in 2016 there were 8.82 chickens for every person. American chicken consumers were clear winners in this comparison. Here, the population of chickens went up from 14 birds for every person in the country to 30 birds per person. By stark contrast, the ratio of chickens to people in Kenya went down from roughly on bird for every person to about one bird for every two people. This semi-natural biological resource has become twice as scarce in Kenya over three generations. As human populations continue to increase over the next decades, questions about how biological entities interface with human survival (and, of course, their own) will become ever more pressing. Counting Your Chickens: The World’s Most Numerous Bird

Evidence: 45 • authority: 71

Three chickens for every human on the globe - The Globe and Mail Three chickens for every human on the globe "In 1960, there were just over three billion people alive in the world; now there are close to seven billion," The Huffington Post says. "So the global population of humans has more than doubled in 50 years. But at the same time, people around the world have demanded more and more meat. ... So what has that meant for global livestock populations? Massive, massive growth. In 1961, there were 3.9 billion chickens on Earth, just over one per person. Now there are 19 billion, according to UN data analyzed by The Economist. That's three for every person alive. The next most populous livestock is cattle; there are 1.4 billion of them. Wild animals, meanwhile, have not fared as well. Since 1960, the global population of wild animals has tumbled by a quarter."

Evidence: 45 • authority: 72

Chicken is the most common type of poultry and the second most consumed meat in the world, after pork. Owing to the relative ease and low cost of raising chickens—in comparison to mammals such as cattle or pigs—chicken meat (commonly called just "chicken") and chicken eggs have become prevalent in numerous cuisines. Chicken can be prepared in a vast range of ways, including baking, grilling, barbecuing, frying, boiling, and roasting. Since the latter half of the 20th century, prepared chicken has become a staple of fast food. Chicken is sometimes cited as being more healthy than red meat, with lower concentrations of cholesterol and saturated fat. The poultry farming industry that accounts…

Evidence: 33 • authority: 62

Domestic chickens appeared more than 8 000 years ago in Southeast Asia and were introduced to the rest of the world by sailors and traders. Today, they are by far the most important poultry species in the world. High-yielding commercial breeds of chickens have been developed in recent decades to meet growing global demand for animal-source foods. These chickens are bred specifically either for meat or egg production and require intensive nutritional and health management to express their genetic potential. They are widely available all over the world, and are used by most large-scale companies. Chickens | Gateway to poultry production and products |FAO

Evidence: 33 • authority: 72

The chicken (Gallus gallus domesticus) is the domesticated form of the red junglefowl (Gallus gallus), originally native to Southeast Asia. It was first domesticated around 8,000 years ago and is one of the most common and widespread domesticated animals in the world. Chickens are primarily kept for their meat and eggs, though they are also kept as pets. As of 2023, the global chicken population exceeded 26.5 billion, with more than 50 billion birds produced annually for consumption. Specialized breeds such as broilers and laying hens have been developed for meat and egg production, respectively. A hen bred for laying can produce over 300 eggs per year. Chickens are social animals with comp…

Evidence: 0 • authority: 94

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