SOURCE ET SUITE
TELLEMENT EVIDENT, MAIS LE PLUS TOT SERA LE MIEUX!!!!!!!!!
AVEC LIENS INTERESSANTS SUR LA PAGE
The great bulk of American beef comes from cows that have been
fattened in confined yards with thousands of of their peers, munching a
diet of corn, soybeans, and chemical additives. Should the feedlot model, innovated in the United States in the middle of the 20th century, continue its global spread—or is it better to raise cows on pasture, eating grass?
The question is critical, because global demand for animal flesh is
on the rise, driven by growing appetites for meat in developing
countries, where per capita meat consumption stands at about a third of developed-world levels.
In a much-shared interview
on the website of the Breakthrough Institute, Washington State
University researcher Judith Capper informs us that the US status quo is
the way forward. "If we switched to all grass-fed beef in the United
States, it would require an additional 64.6 million cows, 131 million
acres more land, and 135 million more tonnes of greenhouse gas
emissions," she said. "We’d have the same amount of beef, but with a
huge environmental cost."....
....The answer, plainly, is no, according to the eminent ecologist Vaclav Smil in a 2014 paper.
Smil notes that global meat production has risen from less than 55
million tons in 1950 to more than 300 million tons in 2010—a nearly
six-fold increase in 60 years. "But this has been a rather costly
achievement because mass-scale meat production is one of the most
environmentally burdensome activities," he writes, and then proceeds to
list off the problems: it requires a large-scale shift from diversified
farmland and rainforests to "monocultures of animal feed," which
triggered massive soil erosion, carbon emissions, and coastal "dead zones"
fed by fertilizer runoff. Also, concentrating animals tightly together
produces "huge volumes of waste," more than can be recycled into nearby
farmland, creating noxious air and water pollution. Moreover, it's
"inherently inefficient" to feed edible grains to farm animals, when we
could just eat the grain, Smil adds.