How much meat and milk could grassland alone provide?
Besvaret 4. november 2026
Not much, compared with what we eat today. Estimates of the animal protein that livestock could supply without crops grown for feed:
| Source of feed | g animal protein per person a day |
|---|---|
| Grassland only | 7 to 18 |
| Grassland plus food waste and by-products | 11 to 32 |
| Grass and leftovers | 9 to 23 |
| For comparison: rich regions today | 50 to 60 |
The first two are from a report by the Food Climate Research Network at the University of Oxford, the third from a systematic review of eight studies from Wageningen University. The WHO puts an adult's need at 50 to 60 grams of protein in total a day, and Europeans get on average 51 grams of animal protein from land animals, figures quoted in the review. The review finds that some animal food from such livestock is the most efficient use of cropland, but that grazing may rule out other uses of grassland, such as rewilding.
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- Gennemgang af 8 studier fra Wageningen University & Research, 2018Samler mange studier · Systematisk gennemgang · 8 studier om protein fra lavomkostningsdyrDefining a land boundary for sustainable livestock consumption
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