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The Poland China is a breed of domestic pig, first bred in the Miami Valley, Ohio, United States, in 1816, deriving from many breeds including the Berkshire and Hampshire.〔Although origin of the term ''Poland China'' is a bit murky, it unquestionably arose from the initial American farmers' perception of interbreeding Polish pigs with Big China pigs. See 〕 It is the oldest American breed of swine. Poland China hogs are typically black, sometimes with six white patches, and are known for their large size. Big Bill, the largest hog ever recorded at 2,552 lb (1,157 kg), was a Poland China. Poland Chinas rank highest in U.S. pork production in pounds of hog per sow per year. The Poland China hog was first bred on the Hankinson Farm in Blue Ball, Warren County, Ohio.〔http://middletownlibrary.contentdm.oclc.org/cdm/search/searchterm/Hankinson〕 A monument to this accomplishment still stands near the place where the hog was originally bred. The monument was moved slightly when the farm was sold for development of the Towne Mall, Middletown, Ohio in the early 1970s, and now stands across the street from the mall property on Cincinnati Dayton Road. Competing claims are made that the first Poland China breeder was David M. Magie, who lived at the Austin-Magie Farm near Oxford, Ohio.〔Curry, Larry. "(The Felix Fryman Farm House )", Ohio Historical Society, 1978-07-03, 3. Accessed 2012-12-31.〕 In the 1920s and 1930s, agricultural reformers introduced the Poland China pig into China, with mixed success. The pigs were not adapted to the climate, and Chinese farmers were more interested in a pig's ability to produce fertilizer than its meat capacity.〔Sigrid Schmalzer, "Breeding a Better China: Pigs, Practices, and Place in a Chinese County, 1929-1937," ''The Geographical Review'' 92.1 (January 2002): 1-22.〕 ==References== 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「Poland China」の詳細全文を読む スポンサード リンク
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