Analysis of global livestock production in last half century

Global livestock inventory increased by two times from 1962 through 2002 and inventory of poultry, pig and cattle simultaneously rose by 3 times, 1.2 times and 42.8%, respectively. Current amount of cattle, sheep and pig in China accounted for about 1/10, 1/5 and 1/2 of that around the world, respectively. All kinds of livestock inventory increased substantially in developing countries during the last halfcentury, but most of livestock excluding poultry started to reduce in developed countries after reaching to a peak in 1970s-1990s, which resulted from population tendency and industrial structure adjustment. Productive efficiency of individual animal was lower for all kinds of livestock in developing countries than that in developed countries, but improved rate of livestock productive efficiency was higher in developing countries than that in developed countries. Specialized livestock production contributed about 3/4 of poultry, over half of pork and almost 2/3 of egg to the whole world at present and about 94% of global meat production came from pork, poultry and beef together. Yield of pork, poultry and beef in China accounted for 55.7%, 23.6% and 13.2% of global corresponding meat production, respectively. From 1961 to 2008, mean annual consumption of meat and milk per capita increased by 0.43 kg/a and 0.57 kg/a in developing countries, respectively whilst by 0.28 kg/a and 0.25 kg/a in developed countries, respectively. Global feed (herbage, concentrate, etc) consumption was 66% higher in 2002 than that in 1962, and cattle, pig and poultry ingested 48.9%, 16.8% and 12.5% of total feed, respectively and occupied 30.7%, 31.7% and 23.6% of feed production land (rangeland, sown grassland, cropland, etc.), respectively.