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@jeremiah @BroDrillard @ned @sun
at the rate it is used, fresh water is a non-renewable resource. land vertebrate biomass today is at ~7 times what it was naturally before human intervention (i.e. prior to global megafaunal extinction), and, to achieve that, aquifers globally are being drained more quickly than precipitation can refill them. it's not possible to just feed cows on grass in a field. you have to pump water and dig things from the ground to feed crops (alfalfa, soy, ...) for them

using water this way, you're taking the fraction of rainfall that was already absorbed and pumping it back to the surface for another chance to evaporate or run off. and the percentage that is absorbed takes nitrates (either from fertiliser directly or from animal poops) along with it, poisoning the aquifer and killing people who drink from it

the current number of humans on the planet is unsustainable, just humans alone outmass those historical megafauna, but the problem is made far worse by feeding them inefficiently, and eating vertebrates is one of the least efficient methods there is. designating more than 3/4 of all crops grown globally to growing baby animals into adults, with them all the while radiating energy away as heat, is just stupid when humans could eat those crops directly instead
@sun @BroDrillard @ned @jeremiah let's do some math

1200 pound steer, you can expect a 740 – 770 pound carcass.

a steer drinks ~75 liters a day, and oldest at slaughter is going to be 2 years / 24 months

365 * 2 = 730 days

730 * 75 liters = 54,750

54,750 / 750 pounds = 73 liters for drinking water only

now let's do their feed

20 pounds grain mix per day is max, this is made of 30% oats 30% barley 40% corn

based on available data:

21 gallons / pound of corn = ~79 liters
290 gallons / pound of oats = 1,097 liters
~346 gallons / pound of barley = 1,310 liters

(1310 / 100) * 30 = 393 liters

(1097 / 100) * 30 = 329 liters

(79 / 100) * 40 = 31 liters

~ 753 liters / pound of grain mix

20 pounds per day * 753 liters = 15060 liters of water for feed inputs

15060 * 730 days of steer age = 10,993,800 liters

10,993,800 liters for all feed inputs / 750 pounds of beef = 14658 liters per pound

14658 feed + 73 liters of drinking water = 14731 liters per pound


seems pretty fucking close to 15,000 liters per pound of beef to me
@sun @BroDrillard @ned it's a fair statement, but it applies to literally all agriculture. The impact depends very much on the farming technique -- intense chemical-source corn feed vs. low-impact pasture grazing, and where -- sparse land with pumped water vs. pastureland with bodies of water. That's before we get to things like processing, mileage, refrigeration, distribution.