why is it a problem that it takes so much water to produce 1kg of beef – something like 15,000 liters – if the cows just pee it all back out anyway?
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The main problem is that industrial meat production is very very inefficient… the bigger the animal gets the more inefficient it is.
The food we give to a cow has 25 times more calories than we get back as product. Chicken is “only” 9
Meaning that the feed we “waste” is huge… That is why there is huge research incentive for growing meat in the lab where it would be more efficient than a living animal
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Similar waste goes into water, most of the water is for the animal to live and grow, only a small portion comes back as useful product.
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Many problems are going to be solved, if we can develop the technology to grow meat without the living animal.
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