Humane Foundation
Topic hub · Systems & Industry

Factory Farming Explained

Industrial animal agriculture produces the overwhelming majority of meat, dairy and eggs consumed worldwide. This hub collects our reporting on how confinement systems operate, the welfare and public-health costs they generate, and the reforms and alternatives being tested.

Stories
11
Writers
8
Reading time
51m
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2
Aerial photograph showing a stark line of green and brown pollution fanning out into a river from an industrial meat plant.
Featured Stories

The Crimson Tide: How Slaughterhouse Waste Is Poisoning America's Waterways

Beyond the slaughterhouse walls lies an unseen crisis: a daily deluge of highly concentrated wastewater overwhelming local ecosystems, sidestepping regulations, and threatening community water sources.

By Isabel Vance · 7 min read

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Frequently asked questions

What is factory farming?
Factory farming is the intensive confinement of animals at high density to maximise output per unit of land, labour and feed. It relies on standardised housing, routine veterinary inputs and rapid growth genetics.
How many animals are raised on factory farms?
Most farmed land animals worldwide — commonly estimated at around 70–90% depending on region and species — are raised in intensive systems rather than pasture-based ones.
Why is factory farming a public health concern?
Dense confinement raises disease-transmission risk, drives antimicrobial use, and concentrates manure and air pollution near farming communities.

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