Monday, July 23, 2007

Meat is murder on the environment

A shamelessly popularist post but the facts speak for themselves. Cows are seriously bad for the environment whether they are dead or alive.

Meat is murder on the environment[New Scientist]
A kilogram of beef is responsible for more greenhouse gas emissions and other pollution than driving for 3 hours while leaving all the lights on back home.

This is among the conclusions of a study by Akifumi Ogino of the National Institute of Livestock and Grassland Science in Tsukuba, Japan, and colleagues, which has assessed the effects of beef production on global warming, water acidification and eutrophication, and energy consumption. The team looked at calf production, focusing on animal management and the effects of producing and transporting feed. By combining this information with data from their earlier studies on the impact of beef fattening systems, the researchers were able to calculate the total environmental load of a portion of beef.

Their analysis showed that producing a kilogram of beef leads to the emission of greenhouse gases with a warming potential equivalent to 36.4 kilograms of carbon dioxide. It also releases fertilising compounds equivalent to 340 grams of sulphur dioxide and 59 grams of phosphate, and consumes 169 megajoules of energy (Animal Science Journal, DOI: 10.1111/j.1740-0929.2007.00457.x). In other words, a kilogram of beef is responsible for the equivalent of the amount of CO2 emitted by the average European car every 250 kilometres, and burns enough energy to light a 100-watt bulb for nearly 20 days.

The calculations, which are based on standard industrial methods of meat production in Japan, did not include the impact of managing farm infrastructure and transporting the meat, so the total environmental load is higher than the study suggests.

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Most of the greenhouse gas emissions are in the form of methane released from the animals' digestive systems, while the acid and fertilising substances come primarily from their waste. Over two-thirds of the energy goes towards producing and transporting the animals' feed.


For more reading on cow burps - which also "blows" out of the water a popular misconception about cows and climate change.

Cows that burp less seen helping in climate fight
He noted the average dairy cow belches out about 100 to 200 liters of methane each day, making diet changes a key potential factor in reducing this greenhouse gas.

"There is a common misperception about how methane gets into the atmosphere," he said. "It is actually through belching rather than the other end."


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1 comment:

Cyber said...


“Vegetarianism is literally about life and death — for each of us individually and for all of us together.

Eating animals simultaneously contributes to: their suffering and death; the ill-health and early death of people; the unsustainable overuse of oil, water, land, topsoil, grain, labor, and other vital resources; environmental destruction, including deforestation, species extinction, mono-cropping, and global warming; the legitimacy of force and violence; the mis-allocation of capital, skills, land, and other assets; vast inefficiencies in the economy; tremendous waste; massive inequalities in the world; the continuation of world hunger and mass starvation; the transmission and spread of dangerous diseases; and moral failure in so-called civilized societies.

Vegetarianism is an antidote to all of these unnecessary tragedies.”

Go to Eco-Eating at www.brook.com/veg