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Questions and Answers
What is the largest contributor to the total livestock sector emissions?
What percentage of total sector emissions is attributed to beef production?
41%
What percentage of total sector emissions is attributed to milk production?
20%
Cattle have _____ chambers/compartments in their stomach.
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Which compartment of a ruminant's stomach is known as the fermentation vat?
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What is the role of the abomasum in ruminants?
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High transportation emissions contribute more to greenhouse gases than livestock.
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Which of the following is NOT listed as a recognized source of greenhouse gases under the Kyoto Protocol?
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Study Notes
Climate Change
- Climate change is a statistical distribution shift in weather patterns, as well as a change in average weather conditions or in the variation of weather around longer-term average conditions.
- Caused by a variety of factors, including biotic processes, changes in solar radiation, plate tectonics, volcanic eruptions, and human activities.
- Contributing factors from human activities include vehicles, high populations, industry, smoke, deforestation and natural calamities.
- Affects from these factors can include floods, droughts, hurricanes and a reduction of biodiversity.
Livestock & Climate Change
- Livestock contributes a significant portion of global greenhouse gas emissions.
- The livestock sector is a greater contributor to emissions than all transportation worldwide.
- Cattle are the most significant contributor to greenhouse gas emissions in the livestock sector (65%).
- Beef production contributes 41% of total emissions and milk production contributes 20% of total emissions within the livestock sector.
Cattle Digestion
- Cattle have four chambers in their stomachs.
- The rumen is the largest chamber and is considered a fermentation vat.
- The reticulum is pouch-like and close to the heart.
- The omasum is a globe shaped chamber and absorbs water and other substances.
- The abomasum is similar to a non-ruminant stomach and is the only chamber lined with glands.
- The abomasum releases hydrochloric acid and digestive enzymes to break down food.
- Regurgitation is part of the cattle digestive process and involves:
- Bringing swallowed up food to the mouth
- Reverse peristalsis
- Plant extracts such as tannins and saponins can be digested by cattle with a digestability range of 5-20%.
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Description
This quiz explores the relationship between climate change and livestock production. It examines the statistical shifts in weather patterns and highlights the significant contributions of the livestock sector to greenhouse gas emissions. Understand how human activities and livestock farming affect our environment and contribute to global warming.
