1. Alao, B. O. et al. assess the shortcomings and promise regarding animal by-products in food systems in this publication: Sustainability (2017) 9: 1089. https://doi.org/10.3390/su9071089.
2. Commission Implementing Regulation (EU) 68/2013 January 16, 2013, feeds catalog: https://eur-lex.europa.eu/eli/reg/2013/68/oj/eng (text with EEA relevance).
3. FAO. 2015. Global Initiative on Food Loss and Waste Reduction. https://openknowledge.fao.org/server/api/core/bitstreams/57f76ed9-6f19-4872-98b4-6e1c3e796213/content
4. U.S. Food & Drug Administration (2023). Animal Feed Regulations (21 CFR Part 589). Available at: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm.
5. Georganas et al. 2020. Transforming food waste to animal feed: bioactive compounds in food waste. Foods 9, Issue 3: 291. https://doi.org/10.3390/foods9030291.
6. Merck Veterinary Manual. Nutrient requirements of beef (2023). https://www.merckvetmanual.com/management-and-nutrition/nutrition-beef-cattle/nutrition-requirements-of-beef-cattle
7. Regulation (EC) No 183/2005 of the European Parliament and of the Council of 12 January 2005 on requirements for feed hygiene, establishes hygiene of feeds for the animal industry. (Text with relevance to the EEA).
8. Regulation (EC) No 1831/2003 of the European Parliament and of the Council of 22 September 2003 on the Additives for Use in Animal Nutrition. https://eur-lex.europa.eu/eli/reg/2003/1831/oj/eng.
9. Regulation (EC) No 767/2009 of the European Parliament and of the Council of 13 July 2009 concerning the placing on the market and use of feed. https://eur-lex.europa.eu/eli/reg/2009/767/oj/eng.
10. Rivin, J., Miller, Z. & Matel, O. (2014). Using food scraps as a feed source for livestock. University of Wisconsin-Extension, Cooperative Extension in collaboration with the United States Department of Agriculture.
11. Shurson, G.C. (2020). “What a waste”—is there an opportunity to enhance the sustainability of food animal production systems by integrating food waste into animal feed given the current health, climate, and economic crises? Sustainability. 12(17), 7071.
12. Van Raamsdonk, L.W.D., et al. (2023). Innovative methods for the safe incorporation of food by-products and biowaste into the feed production process. Journal of Cleaner Production, 388, 135954.