Intensive farming: efficiency and welfare
| English | Português |
|---|---|
| intensive farming/ɪnˈtensɪv ˈfɑːmɪŋ/ | intensive farming |
| animal welfare/ˈænɪml ˈwelfeə/ | animal welfare |
What would explain this observation?
- Keeping animals warm and limiting movement may leave more resources for growth. Whether that method is acceptable requires more than a growth calculation.
- Start with a prediction. State the quantities or features you would compare, then decide what evidence could distinguish two explanations.
Build the model
- Food-production efficiency can increase when less of the energy from food is used for movement or maintaining body temperature. Some intensive systems restrict movement and control environmental temperature. High-protein foods can supply amino acids for growth. These methods do not remove the need for respiration, suitable nutrition or healthy conditions.
- intensive farming 集约化养殖: A production system using controlled inputs and conditions to increase output; animal welfare 动物福利: The health and quality of life of animals under human care.
Which is a relevant limitation of a feed-efficiency comparison?
Higher growth or feed efficiency can support production, but limiting movement can raise animal-welfare concerns. Heating and maintaining facilities have costs and environmental impacts. Disease risk and health depend on management. Evaluate benefits, burdens and ethical objections with supplied evidence rather than presenting confinement as automatically desirable.
Match each technical term to its precise meaning.
Use the definitions to distinguish related quantities and processes.
Choose evidence that can test it
- Higher growth or feed efficiency can support production, but limiting movement can raise animal-welfare concerns. Heating and maintaining facilities have costs and environmental impacts. Disease risk and health depend on management. Evaluate benefits, burdens and ethical objections with supplied evidence rather than presenting confinement as automatically desirable.
- Use fictional feeding and growth records with matched age, breed, feed and measurement interval. Calculate an explicitly defined efficiency and identify what it omits. This is a data-evaluation task; students must not restrict animal movement or alter animal temperature to conduct an efficiency experiment.
Which two habits make the investigation or model in this case more defensible?
Use fictional feeding and growth records with matched age, breed, feed and measurement interval. Calculate an explicitly defined efficiency and identify what it omits. This is a data-evaluation task; students must not restrict animal movement or alter animal temperature to conduct an efficiency experiment.
Work from known quantities
- State the known values and their units. Choose the relation because its assumptions fit this case, then rearrange before substitution.
- Known: a model animal gains 4 kg from 20 kg of feed. Defined mass-conversion efficiency = 4/20×100 = 20%. The ratio is not an energy efficiency unless energy contents are supplied, and it does not itself measure welfare, health or the cost of heating.
A model gains 6 kg from 30 kg feed. Calculate the defined mass-conversion efficiency. Use the same sequence: known quantities → model → relation → substitution → unit and interpretation.
A model gains 6 kg from 30 kg feed. Calculate the defined mass-conversion efficiency.
The result is 20 %. Known: a model animal gains 4 kg from 20 kg of feed. Defined mass-conversion efficiency = 4/20×100 = 20%. The ratio is not an energy efficiency unless energy contents are supplied, and it does not itself measure welfare, health or the cost of heating.
Check the conclusion and its limits
- Food mass, biomass gain and energy are different measures. Protein is not a substitute for every other nutrient. A numerically efficient system can still have disadvantages, which a reasoned evaluation should address directly.
- Return to the original observation. Explain what the result supports, which conditions it assumes, and one way to test a competing explanation.
Greater feed-conversion efficiency proves a farming system has no disadvantages. This claim is false: Food mass, biomass gain and energy are different measures. Protein is not a substitute for every other nutrient. A numerically efficient system can still have disadvantages, which a reasoned evaluation should address directly.
Intensive farming: efficiency and welfare: Higher growth or feed efficiency can support production, but limiting movement can raise animal-welfare concerns. Heating and maintaining facilities have costs and environmental impacts. Disease risk and health depend on management. Evaluate benefits, burdens and ethical objections with supplied evidence rather than presenting confinement as automatically desirable.
Greater feed-conversion efficiency proves a farming system has no disadvantages.
Food mass, biomass gain and energy are different measures. Protein is not a substitute for every other nutrient. A numerically efficient system can still have disadvantages, which a reasoned evaluation should address directly.
A production system using controlled inputs and conditions to increase output: write the technical term.
intensive farming means A production system using controlled inputs and conditions to increase output.