EIGHT MEATY FACTS ABOUT ANIMAL FOOD

From "Livestock Production: Energy Inputs and the Environment", by David Pimentel

-- WHERE'S THE GRAIN? The 7 billion livestock animals in the United States consume five times as much grain as is consumed directly by the entire American population.

-- HERBIVORES ON THE HOOF. Each year an estimated 41 million tons of plant protein is fed to U.S. livestock to produce an estimated 7 million tons of animal protein for human consumption. About 26 million tons of the livestock feed comes from grains and 15 million tons from forage crops. For every kilogram of high-quality animal protein produced, livestock are fed nearly 6 kg of plant protein.

-- FOSSIL FUEL TO FOOD FUEL. On average, animal protein production in the U.S. requires 28 kilocalories (kcal) for every kcal of protein produced for human consumption. Beef and lamb are the most costly, in terms of fossil fuel energy input to protein output at 54:1 and 50:1, respectively. Turkey and chicken meat production are the most efficient (13:1 and 4:1, respectively). Grain production, on average, requires 3.3 kcal of fossil fuel for every kcal of protein produced. The U.S. now imports about 54 percent of its oil; by the year 2015, that import figure is expected to rise to 100 percent.

-- THIRSTY PRODUCTION SYSTEMS. U.S. agriculture accounts for 87 percent of all the fresh water consumed each year. Livestock directly use only 1.3 percent of that water. But when the water required for forage and grain production is included, livestock's water usage rises dramatically. Every kilogram of beef produced takes 100,000 liters of water. Some 900 liters of water go into producing a kilogram of wheat. Potatoes are even less "thirsty," at 500 liters per kilogram.

-- HOME ON THE RANGE. More than 302 million hectares of land are devoted to producing feed for the U.S. livestock population -- about 272 million hectares in pasture and about 30 million hectares for cultivated feed grains.

-- DISAPPEARING SOIL. About 90 percent of U.S. cropland is losing soil -- to wind and water erosion -- at 13 times above the sustainable rate. Soil loss is most severe in some of the richest farming areas; Iowa loses topsoil at 30 times the rate of soil formation. Iowa has lost one-half its topsoil in only 150 years of farming -- soil that took thousands of years to form.

-- PLENTY OF PROTEIN: Nearly 7 million tons (metric) of animal protein is produced annually in the U.S. -- enough to supply every American man, woman and child with 75 grams of animal protein a day. With the addition of 34 grams of available plant protein, a total of 109 grams of protein is available per capita. The RDA (recommended daily allowance) per adult per day is 56 grams of protein for a mixed diet.

-- OUT TO PASTURE. If all the U.S. grain now fed to livestock were exported and if cattlemen switched to grass-fed production systems, less beef would be available and animal protein in the average American diet would drop from 75 grams to 29 grams per day. That, plus current levels of plant-protein consumption, would still yield more than the RDA for protein.

Animal agriculture is a leading consumer of water resources in the United States, Pimentel noted. Grain-fed beef production takes 100,000 liters of water for every kilogram of food. Raising broiler chickens takes 3,500 liters of water to make a kilogram of meat. In comparison, soybean production uses 2,000 liters for kilogram of food produced; rice, 1,912; wheat, 900; and potatoes, 500 liters. "Water shortages already are severe in the Western and Southern United States and the situation is quickly becoming worse because of a rapidly growing U.S. population that requires more water for all of its needs, especially agriculture," Pimentel observed.

Livestock are directly or indirectly responsible for much of the soil erosion in the United States, the ecologist determined. On lands where feed grain is produced, soil loss averages 13 tons per hectare per year. Pasture lands are eroding at a slower pace, at an average of 6 tons per hectare per year. But erosion may exceed 100 tons on severely overgrazed pastures, and 54 percent of U.S. pasture land is being overgrazed.

"More than half the U.S. grain and nearly 40 percent of world grain is being fed to livestock rather than being consumed directly by humans," Pimentel said. "Although grain production is increasing in total, the per capita supply has been decreasing for more than a decade. Clearly, there is reason for concern in the future."

The environmental impact of the meat industry.

In a study listing the most harmful activities and products for the environment, the meat industry was second, behind only automobiles.

"The industrial production of beef, poultry and pork pollutes waterways and air, fouls the land and gobbles up valuable resources, said Warren Leon, deputy director of the Massachusetts environmental group. The manufacture and use of cars and light trucks were at the top of the list. ``That was about what we expected,'' Leon said. But Leon said researchers were surprised when meat production showed up second only to vehicles in terms of environmental destruction. ``We knew meat production would have some kind of impact, but we didn't expect it to be so significant.'' In terms of water pollution, said Leon, beef is 17 times more damaging than all that goes into making pasta. This is because of water pollution from manure, as well as the amount of electrical energy, fuel, fertilizer and pesticides needed to raise cattle fodder. ``The contamination to the nation's waterways from manure run- off is extremely serious,'' he said. ``Twenty tons of livestock manure are produced for every household in the country. We have strict laws governing the disposal of human waste, but the regulations are lax, or often nonexistent, for animal waste.'' Beef production is also 20 times more damaging to wildlife habitat than pasta production, said Leon, because it uses far more land."

Union of Concerned Scientists discussion from an article on the front page of the San Francisco Chronicle, April 27, 1999