I became a #vegetarian (aspiring #vegan) almost exclusively to contribute to reduce animal #suffering.
With time, I realised that the other reasons to avoid animal-based foods are surprisingly strong, too.
🧵
1️⃣ Land usage:
Plant-based calories (and proteins) are much more efficient and require way less land and water than meat and dairy.
🇳🇱
@tripu This misses a very important point… While almost all land suitable for crops is also suitable for animals the reverse isnt true. In fact it is quite often the case animals are raised on land explicitly not suitable for crops. I dont know the exact breakdown, and that would be important to evaluate this fairly. But I know from my interaction with farmers that a great many of them raise their livestock on mountainous land not suited for crops and use fertile farmland mostly for crops.. Even when the land is flat and not mountainous it is often unsuitable for crops due to the makeup of the soil (too rocky, no good drainage, etc)
bonifartius 𒂼𒄄
@freemo @tripu the madness starts when good meadows are plowed and used for crops, killing an important habitat (at least in middle europe), removing a CO2 sink and ruining the soil for a very long time as it’s prone to erosion. i’ve seen this being done to plan corn for bio-gas - of course they need artificial fertilized for it - total madness :)
it may certainly not “optimal” to have ruminants on green land, but they create food from plants humans never could consume. everyone talks about reducing climate impact.
it also doesn’t make sense to drop one of the most important local protein and fat sources in cold and moderate climates, instead transporting stuff around the globe.
one thing that should happen though is that livestock is again raised in more traditional ways, really grazing on meadows etc.
“It is quite often the case animals are raised on land explicitly not suitable for crops.”
If 23% of agricultural land currently dedicated to crops provides 83% of necessary calories worldwide, we would need to “reclaim” only an additional 4.7% of land from livestock usage in order to feed everyone only with plants. Even looking at protein sources, only 11.3% of land would have to be reallocated from “animals” to “plants”.
So even if it were “often the case” that land used for animals can’t be used for plants, it looks like we could still do the switch.
/cc @bonifartius
@freemo @tripu @bonifartius Would be interesting to see what stopping factory farming would do.
So hear me out: Stop factory farming(i.e. where animals are crammed in confined spaces), rededicate the lands farmed for animal food for those to produce human food. Leave the grazing grounds and animals there untouched and see if the meat output from those is needed.
I think we should really differentiate grazing and factory farmed animals. Both for climate (factory farming can be scaled a lot) and from an animal cruelty (obvious, yes?) perspective.
Edit: And if something can be scaled for profit, it will be in current societies.
That’s true. I don’t have that information.
But note that we can’t assume that land reclaimed from animals would have lower caloric output, either.
What we do know is that one unit of land used for crops produces 16.3× as many calories and 6.8× as many proteins than one unit of land used for animals, on average.
Since we currently use more than three times as much land for animals than for plants, even assuming very conservative decreases in production, it seems the switch would be for better (less suffering, less land, less water, fewer antibiotics, less pollution, less CO₂).
I agree that if the vast majority of land used for animals now were pastures that are mostly useless for anything else, then the switch wouldn’t be feasible. But is that the case?
/cc @bonifartius
But note that we can’t assume that land reclaimed from animals would have lower caloric output, either.
Actually we can. We know livestock can be raised on both land suitable for crops and land that isnt. We also know that a lot, and perhaps even the vast majority, are raised on rocky terrain where crops cant be grown. Therefore since anywhere from some to most of the land reclaimed from animals has 0 caloties per acre, on average we know for a fact such land will have less output than current land used for crops.
The only thing we dont know is exactly how much of the land is suitabke for crops, we just know its considerably less than 100%
All of the rest of your post ia moot since it assumes thibgs we dont know to be true about reclained land.
@bonifartius
Another flaw is your assumption that the feed for livestock is taking away from land grown for humans. This too is not true. Generally livestock are fed the food waste from the part of the food we cant eat. So the edible parts go to us and the human inedible parts go to the livestock, either that or the graze on grasses on mou tainous land not suitable for crops.
So everythi g about your estimates are based on faulty assumptions.
@freemo @tripu @bonifartius Huh, i thought that food waste was going to military rations, the more you know…
Joke aside, i heard of crops grown specifically for animal feed, so i highly doubt the assertion of yours that animals were only fed food waste.
A quick online search seems to confirm this, lots of results for “crops grown for animal feed”, for example:
https://www.vox.com/2014/8/21/6053187/cropland-map-food-fuel-animal-feed
They even cite a source :-)
About those mountainous lands, the biggest climate killers (among non-humans) are cows from what i hear. Do they come with retrofit kits for mountainous areas?
Nothing is 100%. Only 14% of food stock for livestock is edible at all by humans. Even less so is palattable to humans. But yes very little is grown exclusively for livestock
@freemo @tripu @bonifartius
Well, what is grown right now would of course need to be changed to crops that are palatable for humans. You didn’t think we want to redirect the animal feed to humans, right?
No your missing the point 14% is food suitabke to humans. 50% or so is grass (most of which on rocky or.mountainous land that cant grow crops). The overwhelming remainder are things like like stalks and leaves, the waste product of harvest. Yes we do sometimes have crops specifically to feed animals, but it isnt the bulk of it.
To give specific numbers it is ….
14% edible (13% of which is grain)
46% grass (primarily land not suitable for crops)
19% residues from processing crops for humans
8% fodder crops (crops grown specific for animals)
5% from crop seeds
8% by products and other inedibly byproducts
@tripu @bonifartius
@freemo @tripu @bonifartius Hmm, the source of the link i provided says the following:
“3.1. Global crop allocations
We investigated crop allocations both in terms of calorie
content and protein content. We find that on a global basis,
crops grown for direct human consumption represent 67%
of global crop production (by mass), 55% of global calorie
production, and 40% of global plant protein production
(table 2). Feed crops represent 24% of global crop production
by mass. However since feed crops like maize, soybeans, and
oil seed meal are dense in both calories and protein content,
feed crops represent 36% of global calorie production and
53% of global plant protein production. “
So 24% versus 8%. Seems too large a gap to be explained by the age of my source (2013).
Can you please cite your source?
So first, i foubd a number on grazing. So cows that graze 67% of them graze on land not suitable for crops
https://www.fao.org/3/ar591e/ar591e.pdf
The source for the percentages in my last response is here:
https://www.sciencedirect.com/science/article/abs/pii/S2211912416300013
@freemo
Hmm, fao.org confuses me. I click on something about proposals for food stuff, i end up with articles about ukraine ^^
The sciencedirect link seems a bit broken. The conclusion ends with “The production of global feed requires 2.5 billion ha of land, which is…”
Funny? Purple? The powerhouse of the cell?
Not sure if i want to trust a source that cuts off in the middle of a sentence, or is that a preview of a payed article?
In any case, factory farmed animals don’t graze, so the grazing grounds not being farmable does not contradict the suggestion to shut those down.
No but factory farms do still consume mostly food waste, converting inedible food into edible food. That is an argument against shutting it down.
@freemo @tripu @bonifartius Hm well, the question is if that is true, could not find any numbers on that - trade secrets?
The study i provided addresses it with 86% of food stock being inedible for humans
@freemo @tripu @bonifartius Well that number had crops grown for animals in it, had it not?
If there are crops grown for animals, it should be possible to grow crops for human consumption on the same land.
Most of what it listed was not crops grown specifically for animals. I listed the breakdown and most of it were either grass (grazing, mostly 66% of which is on land not suitabke for crops and only supports grass) or explicitly food waste like seeds and processing leftovers.
@freemo @tripu @bonifartius
Tried to find some more varied sources, especially since it seems some of those discussed have an agenda. No luck.
Everything i find has some kind of assumption, like “only look at this specific part” that makes them unusable.
Not easy to find good data.
@tripu @bonifartius
You are assuming the land reclaimed from animals would have the same caloric output per acre, thats a faulty assumption.