This article is about the animal. For chicken as human food, see Chicken (food). For other uses, see Chicken (disambiguation).
"Gallus gallus" redirects here. For other subspecies, see Red Junglefowl.
Chicken
A rooster (left) and hen (right)
Conservation status
Domesticated
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Galliformes
Family: Phasianidae
Genus: Gallus
Species: G. gallus
Binomial name
Gallus gallus
(Linnaeus, 1758)
Synonyms
Gallus gallus domesticus
The chicken (Gallus gallus, sometimes G. gallus domesticus) is a domesticated fowl. Recent evidence suggests that domestication of the chicken was under way in Vietnam over 10,000 years ago.[1] Until this discovery, conventional wisdom held that the chicken was domesticated in India.[1]
Some genetic research has suggested that the bird likely descended from both Red and the Grey Junglefowl (G. sonneratii). Although hybrids of both wild types usually tend toward sterility, recent genetic work has revealed that the genotype for yellow skin present in the domestic fowl is not present in what is otherwise its closest kin, the Red Junglefowl. It is deemed most likely, then, that the yellow skin trait in domestic birds originated in the Grey Junglefowl.[2]
The chicken is one of the most common and widespread domestic animals. With a population of more than 24 billion in 2003,[3] there are more chickens in the world than any other bird. Humans keep chickens primarily as a source of food, consuming both their meat and their eggs.
Monday, February 23, 2009
fish
The term "fish" is most precisely used to describe any non-tetrapod chordate, (i.e., an animal with a backbone), that has gills throughout life and has limbs, if any, in the shape of fins.[1] Unlike groupings such as birds or mammals, fish are not a single clade but a paraphyletic collection of taxa, including hagfishes, lampreys, sharks and rays, ray-finned fishes, coelacanths, and lungfishes.[2][3]
A typical fish is ectothermic, has a streamlined body that allows it to swim rapidly, extracts oxygen from the water using gills or an accessory breathing organ to enable it to breathe atmospheric oxygen, has two sets of paired fins, usually one or two (rarely three) dorsal fins, an anal fin, and a tail fin, has jaws, has skin that is usually covered with scales, and lays eggs that are fertilized internally or externally.
Fish come in many shapes and sizes. This is a sea dragon, a close relative of the seahorse. Their leaf-like appendages enable them to blend in with floating seaweed.
To each of these there are exceptions. Tuna, swordfish, and some species of sharks show some warm-blooded adaptations, and are able to raise their body temperature significantly above that of the ambient water surrounding them.[4] Streamlining and swimming performance varies from highly streamlined and rapid swimmers which are able to reach 10–20 body-lengths per second (such as tuna, salmon, and jacks) through to slow but more maneuverable species such as eels and rays that reach no more than 0.5 body-lengths per second.[5] Many groups of freshwater fish extract oxygen from the air as well as from the water using a variety of different structures. Lungfish have paired lungs similar to those of tetrapods, gouramis have a structure called the labyrinth organ that performs a similar function, while many catfish, such as Corydoras extract oxygen via the intestine or stomach.[6] Body shape and the arrangement of the fins is highly variable, covering such seemingly un-fishlike forms as seahorses, pufferfish, anglerfish, and gulpers. Similarly, the surface of the skin may be naked (as in moray eels), or covered with scales of a variety of different types usually defined as placoid (typical of sharks and rays), cosmoid (fossil lungfishes and coelacanths), ganoid (various fossil fishes but also living gars and bichirs, cycloid, and ctenoid (these last two are found on most bony fish.[7] There are even fishes that spend most of their time out of water. Mudskippers feed and interact with one another on mudflats and are only underwater when hiding in their burrows.[8] The catfish Phreatobius cisternarum lives in underground, phreatic habitats, and a relative lives in waterlogged leaf litter.[9][10]
Fish range in size from the 16 m (51 ft) whale shark to the 8 mm (just over ¼ of an inch) long stout infantfish.
Many types of aquatic animals commonly referred to as "fish" are not fish in the sense given above; examples include shellfish, cuttlefish, starfish, crayfish and jellyfish. In earlier times, even biologists did not make a distinction - sixteenth century natural historians classified also seals, whales, amphibians, crocodiles, even hippopotamuses, as well as a host of aquatic invertebrates, as fish.[11] In some contexts, especially in aquaculture, the true fish are referred to as finfish (or fin fish) to distinguish them from these other animals.
A typical fish is ectothermic, has a streamlined body that allows it to swim rapidly, extracts oxygen from the water using gills or an accessory breathing organ to enable it to breathe atmospheric oxygen, has two sets of paired fins, usually one or two (rarely three) dorsal fins, an anal fin, and a tail fin, has jaws, has skin that is usually covered with scales, and lays eggs that are fertilized internally or externally.
Fish come in many shapes and sizes. This is a sea dragon, a close relative of the seahorse. Their leaf-like appendages enable them to blend in with floating seaweed.
To each of these there are exceptions. Tuna, swordfish, and some species of sharks show some warm-blooded adaptations, and are able to raise their body temperature significantly above that of the ambient water surrounding them.[4] Streamlining and swimming performance varies from highly streamlined and rapid swimmers which are able to reach 10–20 body-lengths per second (such as tuna, salmon, and jacks) through to slow but more maneuverable species such as eels and rays that reach no more than 0.5 body-lengths per second.[5] Many groups of freshwater fish extract oxygen from the air as well as from the water using a variety of different structures. Lungfish have paired lungs similar to those of tetrapods, gouramis have a structure called the labyrinth organ that performs a similar function, while many catfish, such as Corydoras extract oxygen via the intestine or stomach.[6] Body shape and the arrangement of the fins is highly variable, covering such seemingly un-fishlike forms as seahorses, pufferfish, anglerfish, and gulpers. Similarly, the surface of the skin may be naked (as in moray eels), or covered with scales of a variety of different types usually defined as placoid (typical of sharks and rays), cosmoid (fossil lungfishes and coelacanths), ganoid (various fossil fishes but also living gars and bichirs, cycloid, and ctenoid (these last two are found on most bony fish.[7] There are even fishes that spend most of their time out of water. Mudskippers feed and interact with one another on mudflats and are only underwater when hiding in their burrows.[8] The catfish Phreatobius cisternarum lives in underground, phreatic habitats, and a relative lives in waterlogged leaf litter.[9][10]
Fish range in size from the 16 m (51 ft) whale shark to the 8 mm (just over ¼ of an inch) long stout infantfish.
Many types of aquatic animals commonly referred to as "fish" are not fish in the sense given above; examples include shellfish, cuttlefish, starfish, crayfish and jellyfish. In earlier times, even biologists did not make a distinction - sixteenth century natural historians classified also seals, whales, amphibians, crocodiles, even hippopotamuses, as well as a host of aquatic invertebrates, as fish.[11] In some contexts, especially in aquaculture, the true fish are referred to as finfish (or fin fish) to distinguish them from these other animals.
this is stam post
Belgians claim that "French" fries are in fact Belgian, but definitive evidence for the origin is difficult to present. Belgian historian Jo Gerard recounts that potatoes were already fried in 1680 in the Spanish Netherlands, in the area of "the Meuse valley between Dinant and Liège, Belgium. The poor inhabitants of this region allegedly had the custom of accompanying their meals with small fried fish, but when the river was frozen and they were unable to fish, they cut potatoes lengthwise and fried them in oil to accompany their meals."[11][12]
The Dutch concur with a Southern Netherlandish or Belgian origin when referring to Vlaamse frieten ('Flemish fries'). In 1857, the newspaper Courrier de Verviers devotes an article to Fritz (assumed pun with 'frites'), a Belgian entrepreneur selling French fries at fairs, calling them "le roi des pommes de terre frites" (The king of fried potatoes). In 1862, a stall selling French fried potatoes (see frietkot) called "Max en Fritz" was established near Het Steen in Antwerp.[13][14]
A Belgian legend claims that the term "French" was introduced when British or American soldiers arrived in Belgium during World War I, and consequently tasted Belgian fries. They supposedly called them "French", as it was the official language of the Belgian Army at that time.[14] But the term "French fried potatoes" had been in use in America long before the Great War.[citation needed]
Whether or not Belgians invented them, "frites" became the national snack and a substantial part of both national dishes — making the Belgians their largest per capita consumers[citation needed] in Europe, and their "symbolic" creators.
[edit]France
Many Americans attribute the dish to France — although in France they are almost exclusively thought of as Belgian — and offer as evidence a notation by U.S. President Thomas Jefferson. "Pommes de terre frites à cru, en petites tranches" ("Potatoes deep-fried while raw, in small cuttings") in a manuscript in Thomas Jefferson's hand (circa 1801-1809) and the recipe almost certainly comes from his French chef, Honoré Julien.[4] It is worth noting, though, that France had recently annexed what is now Belgium, and would retain control over it until the Congress of Vienna of 1815 brought it under Dutch control.[15] In addition, from 1813[16] on, recipes for what can be described as French fries, occur in popular American cookbooks. By the late 1850s, one of these mentions the term "French fried potatoes".[17]
Recipes for fried potatoes (not clearly specified how) in French cookbooks date back at least to Menon's Les soupers de la cour (1755). It is true that eating potatoes was promoted in France by Parmentier, but he did not mention fried potatoes in particular. And the name of the dish in languages other than English does not refer to France; in French, they are simply called "pommes de terres frites" or, more commonly, simply "pommes frites" or 'frites'.
[edit]Spain
Some claim that the dish was invented in Spain, the first European country in which the potato appeared via the New World colonies, and assumes the first appearance to have been as an accompaniment to fish dishes in Galicia,[citation needed] from which it spread to the rest of the country and further to the Spanish Netherlands, more than a century before Belgium was created there.
Professor Paul Ilegems, curator of the Friet-museum in Antwerp, Belgium, believes that Saint Teresa of Ávila fried the first chips, referring also to the tradition of frying in Mediterranean cuisine.[18][13]
The Dutch concur with a Southern Netherlandish or Belgian origin when referring to Vlaamse frieten ('Flemish fries'). In 1857, the newspaper Courrier de Verviers devotes an article to Fritz (assumed pun with 'frites'), a Belgian entrepreneur selling French fries at fairs, calling them "le roi des pommes de terre frites" (The king of fried potatoes). In 1862, a stall selling French fried potatoes (see frietkot) called "Max en Fritz" was established near Het Steen in Antwerp.[13][14]
A Belgian legend claims that the term "French" was introduced when British or American soldiers arrived in Belgium during World War I, and consequently tasted Belgian fries. They supposedly called them "French", as it was the official language of the Belgian Army at that time.[14] But the term "French fried potatoes" had been in use in America long before the Great War.[citation needed]
Whether or not Belgians invented them, "frites" became the national snack and a substantial part of both national dishes — making the Belgians their largest per capita consumers[citation needed] in Europe, and their "symbolic" creators.
[edit]France
Many Americans attribute the dish to France — although in France they are almost exclusively thought of as Belgian — and offer as evidence a notation by U.S. President Thomas Jefferson. "Pommes de terre frites à cru, en petites tranches" ("Potatoes deep-fried while raw, in small cuttings") in a manuscript in Thomas Jefferson's hand (circa 1801-1809) and the recipe almost certainly comes from his French chef, Honoré Julien.[4] It is worth noting, though, that France had recently annexed what is now Belgium, and would retain control over it until the Congress of Vienna of 1815 brought it under Dutch control.[15] In addition, from 1813[16] on, recipes for what can be described as French fries, occur in popular American cookbooks. By the late 1850s, one of these mentions the term "French fried potatoes".[17]
Recipes for fried potatoes (not clearly specified how) in French cookbooks date back at least to Menon's Les soupers de la cour (1755). It is true that eating potatoes was promoted in France by Parmentier, but he did not mention fried potatoes in particular. And the name of the dish in languages other than English does not refer to France; in French, they are simply called "pommes de terres frites" or, more commonly, simply "pommes frites" or 'frites'.
[edit]Spain
Some claim that the dish was invented in Spain, the first European country in which the potato appeared via the New World colonies, and assumes the first appearance to have been as an accompaniment to fish dishes in Galicia,[citation needed] from which it spread to the rest of the country and further to the Spanish Netherlands, more than a century before Belgium was created there.
Professor Paul Ilegems, curator of the Friet-museum in Antwerp, Belgium, believes that Saint Teresa of Ávila fried the first chips, referring also to the tradition of frying in Mediterranean cuisine.[18][13]
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