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The Aylesbury duck is a breed of domesticated duck, bred mainly for its meat and appearance. It is a large duck with pure white plumage, a pink bill, orange legs and feet, an unusually large keel, and a horizontal stance with its body parallel to the ground. The precise origins of the breed are unclear, but raising white ducks became popular in Aylesbury, Buckinghamshire, England, in the 18th century owing to the demand for white feathers as a filler for quilts. Over the 19th century selective breeding for size, shape and colour led to the Aylesbury duck. Duck rearing became a major industry in Aylesbury in the 19th century. The ducks were bred on farms in the surrounding countryside. Fertilised eggs were brought into the town's "Duck End", where local residents would rear the ducklings in their homes. The opening of a railway to Aylesbury in 1839 enabled cheap and quick transport to the markets of London, and duck rearing became highly profitable. By the 1860s the duck rearing industry began to move out of Aylesbury into the surrounding towns and villages, and the industry in Aylesbury itself began to decline. In 1873 the Pekin duck was introduced to the United Kingdom. Although its meat was thought to have a poorer flavour than that of the Aylesbury duck, the Pekin was hardier and cheaper to raise. Many breeders switched to the Pekin duck or to Aylesbury-Pekin crosses. By the beginning of the 20th century competition from the Pekin duck, inbreeding, and disease in the pure-bred Aylesbury strain and the rising cost of duck food meant the Aylesbury duck industry was in decline. The First World War badly damaged the remaining duck industry in Buckinghamshire, wiping out the small scale producers and leaving only a few large farms. Disruption caused by the Second World War further damaged the industry. By the 1950s only one significant flock of Aylesbury ducks remained in Buckinghamshire, and by 1966 there were no duck-breeding or -rearing businesses of any size remaining in Aylesbury itself. Although there is only one surviving flock of pure Aylesbury ducks in the United Kingdom and the breed is critically endangered in the United States, the Aylesbury duck remains a symbol of the town of Aylesbury, and appears on the coat of arms of Aylesbury and on the club badge of Aylesbury United. ==Origins and description== The precise origin of the Aylesbury duck is unclear. Before the 18th century, duck breeds were rarely recorded in England, and the common duck, bred for farming, was a domesticated form of the wild mallard. The common duck varied in colour, and as in the wild, white ducks would occasionally occur. White ducks were particularly prized, as their feathers were popular as a filler for quilts. In the 18th century selective breeding of white common ducks led to a white domestic duck, generally known as the English White. Since at least the 1690s ducks had been farmed in Aylesbury, and raising English Whites became popular in Aylesbury and the surrounding villages. By 1813 it was remarked that "ducks form a material article at market from Aylesbury and places adjacent: they are white, and as it seems of an early breed: they are bred and brought up by poor people, and sent to London by the weekly carriers". The duck farmers of Aylesbury went to great lengths to ensure the ducks retained their white colouring, keeping them clear of dirty water, soil with a high iron content and bright sunlight, all of which could discolour the ducks' feathers. Over time, selective breeding of the English White for size and colour gradually led to the development of the Aylesbury duck. A rather large duck breed, the Aylesbury duck has pure white plumage and bright orange legs and feet. Its legs are placed midway along the body and it stands with its underside parallel to the ground, giving it a body described as "boat-shaped". It has a relatively long and thin swan-like neck, and a long pink bill which comes straight out from the head. An Aylesbury duckling incubates in the egg for 28 days. Until eight weeks after hatching, the time of their first moult, ducks and drakes (females and males) are almost indistinguishable. After moulting, males have two or three curved tail feathers and a fainter, huskier quack than the female. By one year of age, females and males grow to an average weight of respectively, although males can reach around . Unlike the Rouen duck, the other popular meat variety in England in the 19th century, Aylesbury ducks lay eggs from early November. Aylesbury ducks fatten quickly and by eight weeks after hatching weigh up to , large enough to eat but still young and extremely tender. Consequently, their meat came onto the market from February onwards, after the close of the game season but before the earliest spring chickens were on sale. Rouen ducks, whose mallard-like coloration made them less valuable, lay eggs from early February and take six months to grow large enough to eat. As a consequence, Aylesbury ducks were sold primarily in the spring and summer, and Rouen ducks in the autumn and winter. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Aylesbury duck」の詳細全文を読む スポンサード リンク
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