Meat Production Methods
Introduced| English |
|---|
| feedlot/ˈfiːdlɒt/ |
| overgrazing/ˌəʊvəˈɡreɪzɪŋ/ |
The cost of meat
- Raising animals for meat feeds billions of people.
- But it takes far more land, water, and grain than growing plants.
- The way we raise animals shapes its environmental cost.
- Two main methods have very different impacts.
Feedlots: intensive production
- A feedlot 饲养场 packs thousands of animals together and feeds them grain.
- It is efficient and produces cheap meat quickly.
- But the animals produce enormous, concentrated waste.
- This waste pollutes water and releases greenhouse gases.
A feedlot is a place where…
A feedlot packs many animals together and feeds them grain — efficient but very polluting.
Grazing on open land
- Other animals are raised by grazing on open grassland.
- This can be gentler, letting animals feed naturally.
- But too many grazers cause overgrazing 过度放牧.
- Overgrazing strips the land bare, leading to erosion and desertification.
A major environmental problem with feedlots is…
Feedlots concentrate enormous animal waste, which pollutes water and releases greenhouse gases.
Letting too many animals graze until the land is stripped bare is called ____.
Overgrazing strips the land of plants, leaving bare, eroding soil.
Meat versus plants
- Because energy is lost at each trophic level, meat is costly to produce.
- Feeding grain to animals, then eating the animals, wastes most of the energy.
- So meat needs far more land, water, and grain than plant crops.
- Eating lower on the food chain uses fewer resources.
Which production method?
Sort each feature by whether it describes intensive feedlots or open grazing.
Producing meat generally uses much more land and water than growing plant crops.
Because energy is lost at each trophic level, meat needs far more land, water, and grain than plants.
Select all true statements about meat production.
Meat production has large environmental impacts. The other three are correct.
Both methods have downsides — it is a trade-off, not one good and one bad. Feedlots are efficient but create concentrated pollution; open grazing is more natural but can cause overgrazing and erosion. And either way, meat uses far more resources than plant food.
Grain in, meat out:
- It can take several kilograms of grain to produce one kilogram of beef.
- That grain, land, and water could have fed far more people directly.
- This is why meat has a large environmental footprint — most of the energy is lost feeding the animal.
Meat production is resource-heavy because energy is lost at each trophic level. Feedlots are efficient but concentrate huge polluting waste; open grazing is more natural but can cause overgrazing and erosion. Both use far more land, water, and grain than growing plant crops.