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Summary of Work at Surrey

This summary highlights the key findings and lessons learned from the LCA (Life Cycle Assessment) of crickets reared for live food. It explores the environmental impact and challenges of using crickets as a proxy for rearing for human food. The work was conducted in collaboration with a large cricket rearing farm and has significant implications for insect-based businesses within the UK. The results show that crickets have a high environmental impact, particularly in terms of heating and feed production. The findings also suggest potential improvements in business practices to reduce the environmental impact, such as harvesting crickets at full weight and optimizing feed conversion ratios. The outputs of this work include academic papers, presentations, and participation in conferences.

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Summary of Work at Surrey

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  1. Summary of Work at Surrey Stepping Up final meeting London 16th Jan 2019

  2. Lessons Learned: LCA of crickets for live food • Very few examples of businesses within UK. • Worked with large cricket rearing farm to assess environmental impact. • Crickets reared for live foodnot human food. • Turns out that they cannot be used as a good proxy for rearing for human food….. • Surprise to everyone involved. • Nominal agreement to conduct a food LCA test, but delays at the company pushing things back. #universityofsurrey

  3. Environmental Impact - Aggregate • Impact vs important parts of life cycle. • Aggregated impact across all impact factors. • Production of crickets worst – heating. • Feed production. • Avoided fertiliser is a bonus. #universityofsurrey

  4. Environmental Impact – Climate Change • Contrast to aggregate results. • Feed production reduced. • Frass application increased. #universityofsurrey

  5. Environmental Impact - % • Impact as a % of total vs impact factor. #universityofsurrey

  6. Changes in Business Practice What happens in improvements are made? • Scenarios: • Crickets harvested at full weight. • Feed conversion ratio of 1.47:1 • Both 1 & 2. • No heating applied. • Frass to heat. • Frass to heat & electricity. #universityofsurrey

  7. Aggregated Results #universityofsurrey

  8. Significant Life Cycle Parts #universityofsurrey

  9. Outputs • Planned: • Paper on LCA of crickets for live food. Undergoing re-draft. Target: Int J LCA. • Paper on unintended consequences. Target: Global Transitions. • Possible paper on LCA of crickets for food. Target: Int J lCA. • Paper and presentation at Sustainable Innovation, Epsom, 2019 on novel insect businesses. • Recent outputs: • Presentation: Stepping Up Innovation from Model to Policy, Water Science for Impact, Wageningen, 10/18. • Presentation: The Environmental Impact of Edible Insects, Doctoral College Conference, Surrey, 07/18. • Presentation: The problem of food waste and how we can make the most of it, Fest. Of Res., Surrey, 06/18. • Poster: The environmental impact of rearing insects for food within the UK, Gordon Conf., Switzerland, 05/18. #universityofsurrey

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