GREY:BIXZF - Post by User
Post by
MorrisonMOon Feb 01, 2011 12:32am
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Post# 18053221
4.3 billion large domesticated animals and 17 bill
4.3 billion large domesticated animals and 17 billFood security must also take into account the growing demand for higher-cost cereals such as rice and wheat over sorghum and root-crops, as well as animal products. All are more resource expensive to produce. Increased demand for meat is a particular concern, since livestock conversions, usually calculated in terms of food energy grain-to-livestock ratios, are high. In a feedlot, it takes two kilos (kilograms) of grain to produce one kilo of chicken or fish, four kilos to produce one kilo of pork, and seven to produce one kilo of beef. Some suggest the ratios may be even higher: 3:1, 6:1, and 16:1. In the 1990s, it was calculated that some 4.3 billion large domesticated animals and 17 billion poultry eat 40 per cent of the world's grain supply (Foster 1992). Animal production also takes land and water resources. The argument can be made that these might be allocated otherwise to less resource-expensive food crops, but the livestock economy is complex, and reductions in animal production will not produce more food suddenly at lower cost.
https://unu.edu/unupress/unupbooks/uu22we/uu22we09.htm