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Chapter 6 ![]() Pig & Hog Statistics ![]() ![]() Summary
![]() Pigs People Keep
Source: Live Swine Selected Countries Summary. Production (Pig Crop), and Total Beginning Stocks. In Livestock and Poultry: World Markets and Trade. United States Department of Agriculture, Foreign Agricultural Service. www.fas.usda.gov. (Web site accessed February 2008.) ![]() Pigs People Kill
Source: same as for Table 1. ![]() Notes for the Tables Figures in these tables are derived from the USDA (see Source, below the tables). USDA state that their data are based on “USDA-FAS attache reports, official statistics, and results of office research” and that their data include only those countries which are the major animal producers. World Total, therefore, is a minimum figure, less than the actual total. The USDA provide two sets of figures in their original data: 'Total Beginning Stocks' and 'Production Crop'. Beginning Stocks are the animals alive at the start of the year and breed the Production Crop. The number of Beginning Stocks remain roughly constant from year to year and it is largely the Production Crop that is slaughtered. Pig numbers include both classes of pig and should give an estimate of the total number of pigs in countries. Livestock are impossible to count accurately; therefore I have rounded the figures in this table to avoid spurious accuracy and totals may not necessarily add up exactly. Other Useful Sources As well as USDA data, you may find these online statistical sources useful: Earth Trends, the World Resources Institute. Agriculture and Food - Livestock: Swine stocks. www.wri.org. Earth Trends obtain their data from the Food and Agriculture Organisation of the United Nations (FAO). Be aware, however, that FAO figures are from ‘spot counts’. A spot count is a census of animals on one day in the year (eg 1 July or 31 December). The method does not count all the animals born during the year (animals may have died before the spot count or were born after it and not counted). Therefore FAO figures consistently underestimate the total number of animals alive during the course of a year. China Statistical Yearbook. Number of Livestock. National Bureau of Statistics of China. www.stats.gov.cn. The USDA data above on pig numbers and slaughter agree reasonably well with data about pigs in China, differing by plus or minus a few million pigs for each year data is given.
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