出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2018/05/16 23:20:34」(JST)
ケージ（英: cage）
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This article may be expanded with text translated from the corresponding article in German. (October 2017) Click [show] for important translation instructions.
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A cage is an enclosure often made of mesh, bars or wires, used to confine, contain or protect something or someone. A cage can serve many purposes, including keeping an animal in captivity, capturing, and being used for display of an animal at a zoo.[1]
A cage does not hermetically separate the contents from external environmental influences, which is one of its most important properties. In contrast to a basket, a cage is generally closed on all sides. When used as a shipping container, a metal crate constructed as an open crate may be termed a cage.
Cages are often used as a way to confine animals. These provide as a habitat to the animal, and since they've advanced, they are now specially designed to fit that species of animal. Captive breeds of birds, rodents, reptiles, and even larger animals have also been known to be confined in a cage as a domesticated animal (also known as a pet). Captivity is a common purpose of the cage.
Animal cages have been a part of human culture since ancient times. For example, an Ancient Greek vase dated to 490 B.C. depicts a boy holding a possibly domesticated rabbit on his lap, with a cage with an open door in the background.[2] The biblical Book of Jeremiah refers to a tribe being like "cages full of birds",[3] and the Book of Ezekiel describes the capture of a lion in which the captors "pulled him into a cage and brought him to the king of Babylon".[4]
The different laws governing the keeping of animals in captivity generally provide for the size of cages or minimum equipment, depending on the species, whether for transport or for breeding. Swiss legislation, for example, defines minimum absolute internal dimensions for pet cages, but the Swiss Animal Protection organization (PSA) states that even if these dimensions comply with the law, they are far from being in line with the needs of species. It is therefore necessary in practice to provide a much higher vital space to ensure the well-being of the occupants.[5]
Animal protection associations have often argued for improving transport conditions in cages and for bans on battery cages, especially for egg-laying hens. The European legislation is constantly changing, but consumer behavior also influences breeding conditions.[6]
Cages also serve as a trapping tool.[7] This is a common and illegal purpose of the cage, as poaching is illegal itself. These type of cages are used to trap an animal, or hold them for a certain period of time. U.S. President Theodore Roosevelt used a cage himself to capture a bear, as the cage serves a purpose for capturing large animals.
Zoo cage
Aviary
Decorative aviary
Battery cage
Hamster or mouse cage
Rat cage
Rabbit cage
The hand of a marmoset caged at a butterfly park
Cage of bird trapper (late nineteenth century)
Birdcage (eighteenth / nineteenth century)
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This section needs expansion. You can help by adding to it. (October 2017)
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In history, prisoners were sometimes kept in a cage. During the Vietnam War they were referred to as "tiger cages".[8] They would sometimes be chained up inside into uncomfortable positions to intensify suffering.
Cages are used in various forms of entertainment to create excitement from the sense that the entertainers are trapped in the cage. For example, cage dancing "refers to a scantily-clad feminine dancer, perhaps wearing a mini-skirt or hot- pants, and (supposedly) trapped inside of a hanging bird cage".[9] Cage fighting involves two combatants, usually engaging in mixed martial arts, inside a cage-like structure, and "conjures up the image of two combatants trapped in a cage, trading vicious blows as the audience bays for blood".[10] In Australia, a ban on the use of "cage-like enclosures" at such events was lifted in 2014.[10] Steel cages are also one of the oldest form of enclosures used in professional wrestling. The first "steel cage match" of any kind took place on June 25, 1937 in Atlanta, Georgia.[11] This match took place in a ring surrounded by chicken wire, in order to keep the athletes inside, and prevent any potential interference.[12]
Cage protecting a baptismal font
Locker cages in Hong Kong
Protection cage
Sharks around a shark cage being used for shark tourism
Faraday cage
Go-go dancing cage
Containers
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