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Dairy Farming's Environmental Impact: New Research from Norway Reveals Key Factors

Strategic Insights

— 1 min read

New research from the Norwegian Institute of Bioeconomy Research (NIBIO) has highlighted the significant environmental impact of dairy farming, contributing around 2.5% of global anthropogenic greenhouse gas (GHG) emissions. The study, which analyzed data from 200 commercial dairy farms in Central Norway between 2014 and 2016, identified key factors that influence environmental impact and economic performance.

Key Takeaways:

  • The study found that the share of dairy cows is the most important factor in reducing GHG emissions, energy and nitrogen intensity, and land use, but also decreases gross margin.
  • Additional key factors for reducing environmental impact include less purchased nitrogen fertilizer and higher forage yield.
  • The delivery of human-edible energy from milk and meat production is a crucial functional unit for evaluating the environmental impact and economic performance of dairy farms.
  • Life Cycle Assessment (LCA) was used to calculate the environmental impacts of 200 commercial dairy farms in Central Norway.
  • The study's findings have implications for developing effective mitigation strategies for dairy farming's environmental impact.
  • The research highlights the importance of considering multiple factors when evaluating the environmental and economic performance of dairy farms.

Statistics:

  • Greenhouse gas (GHG) emissions from dairy farming contribute approximately 2.5% of global anthropogenic GHG emissions.
  • The study analyzed data from 200 commercial dairy farms in Central Norway between 2014 and 2016.
  • Life Cycle Assessment (LCA) was used to calculate the environmental impacts of 200 commercial dairy farms.
  • The share of dairy cows was found to be the most important factor in reducing GHG emissions, energy and nitrogen intensity, and land use.

Sources:

  • Environmental impact and economic performance of Norwegian dairy farms. Science of The Total Environment, 2025;981:179609.
  • Newsrix. NIBIO - Norwegian Institute of Bioeconomy Research Reports Findings in Environmental Impact (Environmental impact and economic performance of Norwegian dairy farms). Ecology, Environment & Conservation. May 30, 2025; p 458.

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