Andrew Brewer retweetledi

"50% of the world's cropland is used to feed livestock."
Right. Let's have a look at that.
Because this figure gets deployed like a weapon in every vegan argument about animal agriculture, usually immediately after someone points out that monocrops destroy topsoil, obliterate biodiversity, and require industrial pesticide regimes that would make a chemical weapons inspector uncomfortable.
So. The claim.
Yes, roughly half of global cropland by area is involved in producing livestock feed. That number is technically defensible. It is also an extraordinary piece of misdirection.
Here's what it doesn't tell you.
The single largest component of that "livestock feed" figure is soybean. Global soy production is approximately 370 million tonnes per year. About 80% of that gets processed into soybean oil: for human consumption, biodiesel, and industrial use. The remaining meal, after the oil is extracted, goes to animal feed. The animals are eating the industrial byproduct. The waste. The thing left over after humans have already taken what they wanted.
You are not growing soy FOR the cow. You are growing soy for oil and food processing, and the cow is eating the bit you couldn't sell.
Next: alfalfa. One of the most common livestock feed crops globally. It is also grown predominantly on alkaline soils, saline soils, semi-arid land, and high-altitude terrain that would fail to support human food crops. It fixes nitrogen. It stabilises degraded land. It is not competing with wheat. It is growing on land that wheat has already looked at and decided against.
Then you have distillers' grains: the spent grain from ethanol and alcohol production. Corn silage: the stalks and husks after human food is removed. Cottonseed meal: the byproduct of the cotton industry. Citrus pulp. Sugar beet pulp. Oilseed residues.
Livestock are, in enormous measure, running on the off-cuts of industries that exist for other purposes entirely.
The "50% of cropland" figure doesn't tell you that a significant portion of that land couldn't grow human food. It doesn't tell you that much of the feed is a byproduct that would otherwise be landfilled. It doesn't tell you that the animals are often doing the most efficient possible thing with material that has nowhere else to go.
It tells you a large number, in a confident voice, with no context.
Which is, in fairness, the full methodology of most vegan nutrition claims.

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