2012-2013: Review of livestock feed additives that have direct beneficial effects on the environment (Ref. CFT/EFSA/FEED/2012/02 – CT01)

In this project, funded by the European Food Safety Authority (EFSA), AERU undertook a thorough, critical and systematic review of existing evidence of the environmental benefits associated with feed additives. This included 'grey' literature and unpublished reports as well as journal publications and project reports. The analysis compared the study methodology against a set of pre-determined criteria and produced an inventory of current feed additives together with relevant data (quantitative and qualitative) on efficacy, mode of action, usage and regulatory status as well as physico-chemical and toxicological data. Data was accessible for both individual studies and accumulated evidence; and was used to support the European regulatory process.


  • Lewis, K.A., Tzilivakis, J., Green, A. & Warner, D.J. (2015). The potential of feed additives to improve the environmental impact of European livestock farming: A multi-issue analysis. International Journal of Agricultural Sustainability, 13(1): 55-68. DOI.
  • Tzilivakis, J., Lewis, K.A., Green, A., Warner, D.J., Stedman, A. & Naseby, D. (2013). Review of substances/agents that have direct beneficial effect on the environment: Mode of action and assessment of efficacy. EFSA Supporting Publication 2013:EN-440. European Food Safety Authority, Parma, Italy.[Download].


Prof. Kathy Lewis



University of Hertfordshire
University of Hertfordshire, 2023.