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Assumptions about feed quality are implicit in such generalizations. It takes seven pounds of feed to produce a pound of beef (live weight), more than three pounds for a pound of pork, and less than two pounds for a pound of chicken. The growing of cereals for feed in turn requires substantial areas of land. In comparison with grazing, intensive livestock production requires large quantities of harvested feed, this overproduction of feed can also hold negative effects. ĭryland grazing on the Great Plains in Colorado For example, global per capita consumption of pork has increased recently (almost entirely due to changes in consumption within China), while global per capita consumption of ruminant meats has been declining. According to an article written by Dave Roos "industrialized Western nations average more than 220 pounds of meat per person per year, while the poorest African nations average less than 22 pounds per person." Trends vary among livestock sectors. There is a strong favorable relationship between meat consumption per capita and gross domestic product (GDP) per capita. Meat consumption typically increases as people and countries get richer. Global production and consumption of poultry meat have recently been growing at more than 5 percent annually. It has been estimated that global meat consumption may double from 2000 to 2050, mostly as a consequence of increasing world population, but also partly because of increased per capita meat consumption (with much of the per capita consumption increase occurring in the developing world). 11 Alternatives to meat production and consumptionĬonsumption and production trends Ĭhanges in demand for meat may change the environmental impact of meat production by influencing how much meat is produced.6 Effect of air pollution on human respiratory health.The IPCC, in their 2019 special report summary, and others assert that a shift towards plant-based diets would be needed for the mitigation of and adaptation to climate change. Without changes, these increases will increase carbon emissions and further biodiversity loss.
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Multiple studies have found that increases in meat consumption are currently associated with human population growth and rising individual incomes or GDP. Livestock have been estimated to provide power for tillage of as much as half of the world's cropland. Some fraction of these effects is assignable to non-meat components of the livestock sector such as the wool, and egg and dairy production, and to the livestock used for tillage. Others concerns about meat production include concerns about health impacts which are often linked to the environmental impacts.
#Meat production driver
Meat production, especially beef production, is main driver of tropical deforestation, with around 80% of all converted land being used to rear cattle and 91% of Amazon land deforested since 1970 converted to cattle ranching. There can be competition for resources, such as land, between growing crops for human consumption and growing crops for animals, where the "global land squeeze" also has impacts on food security. Cereal-use statistic showing an estimated large fraction of crops used as fodder