Methods of Meat Production

A set of flashcards to help review key concepts regarding methods of meat production, their impacts, and comparisons between CAFOs and free range grazing.

What are the two main methods of meat production discussed in the lecture?

CAFOs (Concentrated Animal Feeding Operations) and Free Range Grazing.

What is the main advantage of CAFOs?

They provide low-cost meat to consumers.

What diet are animals in CAFOs typically fed to promote rapid growth?

A grain diet, often corn.

What are some drawbacks associated with CAFOs?

The use of antibiotics and growth hormones, water contamination, and production of greenhouse gases.

What are manure lagoons?

Large open pits or pools where animal waste is stored in CAFOs.

What harmful bacteria can be found in manure lagoons?

E. Coli.

What environmental issue can result from heavy rain affecting manure lagoons?

Flooding that releases pollutants into nearby surface and groundwater.

What is a consequence of high ammonia levels in water?

Eutrophication.

How can manure from CAFOs be utilized beneficially?

It can be dried and turned into fertilizer pellets.

What is the main benefit of free range grazing?

Animals grow at a natural rate without the need for antibiotics.

Why are free range grazing systems less prone to disease outbreaks?

Animals are dispersed over a larger area, reducing population density.

What is overgrazing?

When too many animals graze on a single area of land, removing vegetation.

What is one consequence of overgrazing?

Increased topsoil erosion.

What term describes the process when land becomes too dry to support vegetation?

Desertification.

What is rotational grazing?

Periodically moving animals to prevent overgrazing in one area.

How does rotational grazing improve pasture productivity?

It distributes manure evenly and prevents overgrazing.

Why is meat production less efficient than plant production?

It requires energy and resources to produce feed for animals, which is lost in the energy transfer.

What law explains energy loss in the transfer from plants to animals?

The second law of thermodynamics.

What is the water efficiency issue associated with meat production?

It requires water for both the plants that animals eat and for the animals themselves.

How does free range grazing help land that is too dry for conventional agriculture?

It allows grazing on areas where crops may not grow.

What is a potential negative effect of the hooves of grazing animals on soil?

Soil compaction, which decreases water holding capacity.

What pollutants can antibiotics and hormones from CAFOs introduce into nearby ecosystems?

They can disrupt the endocrine systems of humans and wildlife.

What is the role of grass in the natural diet of grazing animals?

It allows them to grow at a natural rate, being the food they evolved to eat.

How can manure contribute positively to rangelands in free range grazing?

It acts as a natural fertilizer, improving soil quality.

What is one characteristic of land used for free range grazing?

It requires more land than CAFOs.

What is the primary reason for increased costs of meat in free range grazing compared to CAFOs?

It involves more land usage and lower efficiency.

What alternative can be used to avoid waste spills from manure lagoons?

Regularly draining manure lagoons.

What are two environmental impacts of greenhouse gases produced by animal agriculture?

Global climate change and warming of the planet.

What can happen to the vegetation if an area is heavily overgrazed?

It can lead to loss of root structure and increased erosion.

What is one solution to combat the issue of soil erosion in overgrazed areas?

Implementing rotational grazing practices.

What type of animal is primarily raised in free range grazing systems?

Cows.