Answers are grounded in this paper and cite their sources.
Alm M., 2012a. Review of the EU feed ban on non-ruminant Processed Animal Proteins: outlook of the European Fat Processors and Renderers Association (EFPRA). TAIEX Workshop, 27th November 2012, Stavropol (Russia) http://www.fefac.eu/ file.pdf?FileID=42256&CacheMode=Fresh.
No takes yet. Share an insight, caveat, or question.
Jędrejek et al. (2016) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: