What Farming Techniques Improve Food Production?
Learn how limiting farm animals' movement, controlling temperature and providing high-protein feed can improve food production in AQA GCSE Biology Ecology.
Farmers can improve food production by limiting food animals’ movement, controlling the temperature of their surroundings and feeding some animals high-protein food. Limiting movement and controlling temperature reduce the energy animals transfer to the environment, so more of the food they eat can contribute to growth. This is separate-science content in AQA GCSE Biology, covered at both Foundation and Higher tier.
Why movement and temperature matter
Animals use food in respiration, which transfers energy for living processes. Movement uses some of that energy. Keeping animals in a smaller space limits how much they move, so less energy is used for activity.
Animals also use energy to keep warm. Controlling the temperature of their surroundings can reduce the energy they need for this. Together, these methods can make food production more efficient: a greater proportion of the food eaten contributes to an increase in the animal’s biomass. Biomass means the mass of living material in an organism.
This does not mean the animal stops respiring. It still needs energy for essential processes, and not everything it eats becomes new body tissue. The improvement comes from reducing energy transfers that do not contribute to growth.
How high-protein feed helps
Some animals are given high-protein food to increase growth. Protein supplies material for building new body tissue, so this method supports growth in a different way from limiting movement or controlling temperature.
For example, a farmer might keep food animals in temperature-controlled housing where they cannot move long distances and provide high-protein feed. The animals may then gain mass more efficiently. However, restricting animals’ movement can raise animal-welfare concerns, so increased production is not the only consideration when judging an intensive farming method.
Exam mistake to avoid: Do not write that limiting movement creates energy, or that all the food eaten turns into meat. Explain that it reduces energy transfer to the environment, allowing more of the food to contribute to growth.
