5.2.10—Diet trophic level and sustainability

Feeding edible crops to livestock adds a trophic transfer, so much energy and biomass are lost before human consumption.

The trade-off depends on the feed and land: grazing animals on non-arable grassland differs from feeding human-edible grain on cropland.

Replacing grain-fed beef with beans can release cropland for direct food, whereas grazing marginal rangeland may not compete with crops in the same way.

Compare feed type, land opportunity cost, local ecology and the product’s nutrition.

A general trophic pattern is not a universal verdict on every food system.