• 8 Posts
  • 18 Comments
Joined 1 year ago
cake
Cake day: June 1st, 2023

help-circle








  • It still takes more human-edible crops in than it produces out

    1 kg of meat requires 2.8 kg of human-edible feed for ruminants and 3.2 for monogastrics

    https://www.sciencedirect.com/science/article/abs/pii/S2211912416300013

    Per unit crop land you can produce a lot more with plant-based production

    we show that plant-based replacements for each of the major animal categories in the United States (beef, pork, dairy, poultry, and eggs) can produce twofold to 20-fold more nutritionally similar food per unit cropland. Replacing all animal-based items with plant-based replacement diets can add enough food to feed 350 million additional people, more than the expected benefits of eliminating all supply chain food loss.

    https://www.pnas.org/doi/abs/10.1073/pnas.1713820115

    For another study

    We find that, given the current mix of crop uses, growing food exclusively for direct human consumption could, in principle, increase available food calories by as much as 70%, which could feed an additional 4 billion people (more than the projected 2–3 billion people arriving through population growth)

    https://iopscience.iop.org/article/10.1088/1748-9326/8/3/034015/pdf

    For water usage, it’s also draining from places like the drying up Colorado river. We really don’t want to use more water from that area at all

    Correspondingly, our hydrologic modelling reveals that cattle-feed irrigation is the leading driver of flow depletion in one-third of all western US sub-watersheds; cattle-feed irrigation accounts for an average of 75% of all consumptive use in these 369 sub-watersheds. During drought years (that is, the driest 10% of years), more than one-quarter of all rivers in the western US are depleted by more than 75% during summer months (Fig. 2 and Supplementary Fig. 2) and cattle-feed irrigation is the largest water use in more than half of these heavily depleted rivers

    https://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1064&context=wffdocs


  • We instead grow large amounts of crops that go to animal feed. It takes a lot less cropland for plant-based diets because we don’t have to grow feed to another creature (who then will use up a large amount of that energy)

    The research suggests that it’s possible to feed everyone in the world a nutritious diet on existing croplands, but only if we saw a widespread shift towards plant-based diets.

    If we would shift towards a more plant-based diet we don’t only need less agricultural land overall, we also need less cropland.

    In the hypothetical scenario in which the entire world adopted a vegan diet the researchers estimate that our total agricultural land use would shrink from 4.1 billion hectares to 1 billion hectares. A reduction of 75%. That’s equal to an area the size of North America and Brazil combined.

    https://ourworldindata.org/land-use-diets