Cattle at the Great Yorkshire Show
The world cattle population is estimated to be about 1.3 billion head. India
is the nation with the largest number of cattle, about 400 million, followed by
Brazil and China, with about 150 million each, and the United States, with about
100 million. Africa has about 200 million head of cattle, many of which are
herded in traditional ways and serve largely as tokens of their owners' wealth.
Europe has about 130 million head of cattle (CT 2006, SC 2006).
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Cattle today are the basis of a many billion dollar industry worldwide. The
international trade in beef for 2000 was over $30 billion and represented only
23 percent of world beef production. (Clay 2004). The production of milk, which
is also made into cheese, butter, yogurt, and other dairy products, is
comparable in size to beef production and provides an important part of the food
supply for much of the world's people. Cattle hides, used for leather to make
shoes and clothing, are another important product. In India and other poorer
nations, cattle are also important as draft animals as they have been for
thousands of years.
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Concerns have been expressed about the impact of cattle on the environment.
Pasture land for cattle grazing is now the largest agricultural land use
world-wide. The conversion of natural environments to pasture land has
threatened native plants and animals in many places; this is especially a
problem in Brazil where large areas of rainforest are being cut down for cattle
pasture. Cattle naturally produce methane gas though their digestive process
and, because of their large numbers, this is thought to contribute to the
process of global warming. Cattle keeping also can contribute to water
pollution, air pollution, and soil degradation (Clay 2004). Feral cattle,
domestic cattle which have returned to the wild, are also an environmental
problem in many places (ISSG 2005).
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A large part of the grains, legumes, and other crops grown world-wide are used
to feed cattle. Cattle keeping also is a big user of water and of gasoline and
other energy sources. It has sometimes been asked if it would benefit humanity
more if the cattle population was less and more of these resources were used to
feed people directly.
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