5.7 Meat Production Methods

Feedlots vs. Grazing

Concentrated Animal Feeding Operations (CAFOs), or feedlots, raise animals in dense confinement fed grain, producing meat quickly and cheaply but generating concentrated waste, water pollution, and higher disease/antibiotic use. Rangeland grazing lets animals roam and eat grass, using less fossil fuel per animal but requiring more land and potentially causing overgrazing and desertification if mismanaged.

Overgrazing and Its Impacts

Overgrazing occurs when too many animals feed on limited plant biomass, removing vegetation faster than it regrows. This exposes and compacts soil, increases erosion, reduces water infiltration, and can trigger desertification. Rotational grazing (moving herds regularly) helps prevent overgrazing by allowing vegetation to recover.

Environmental Tradeoffs of Meat Production

CAFOs concentrate manure, causing nutrient runoff, eutrophication, and greenhouse gas emissions (methane, CO2), while requiring significant grain, water, and energy inputs. Free-range/grazing systems reduce grain and energy needs but demand far more land, and poor management leads to soil degradation. Both methods raise concerns about antibiotic resistance, animal welfare, and overall land/water use efficiency.

Key terms

CAFO

Concentrated Animal Feeding Operation; confines many animals in a small area, fed grain for efficient meat production but creating concentrated waste and pollution.

Overgrazing

When animal grazing removes vegetation faster than it can regrow, leading to soil exposure, erosion, and possible desertification.

Rotational grazing

A management practice of moving livestock between pastures to allow vegetation recovery and prevent overgrazing.

Desertification

The process by which fertile land becomes desert, often due to overgrazing, drought, or unsustainable farming practices.

Tradeoff: CAFOs vs. Grazing

CAFOs use less land but create concentrated waste/pollution and require more grain/energy; grazing uses more land but reduces grain/fossil fuel inputs and risks overgrazing if unmanaged.

Try an AP-style question

What is a CAFO?

1. A type of fish farm
2. An organic vegetable farm
3. A feedlot confining many animals
4. A free-range pasture