WWF, 2022

aka future of feed paper

https://www.wwf.org.uk/sites/default/files/2022-06/future_of_feed_full_report.pdf

TLDR

The paper argues for a livestock on leftovers approach to UK farming: sketching a system that has no animals fed human edible food

Growing cereal crops to feed animals uses 40% of the UK’s entire arable land area - around 2 million hectares - and consumes half of our annual wheat harvest, the nation’s most important staple crop

Grazing and crops grown for animal feed combined represent 85% of the nation’s total agricultural land footprint - at home and abroad

The report breaks down the % of high opportunity feed, low opportunity cost feed and grass we feed to various animals

High opportunity cost feed are crops and soy cake

It would also massively reduce the number of livestock animals, in one model reducing the UK’s headcount of non-poultry livestock from 48m to 13m and eliminating the 187m poultry birds entirely - whilst still providing sufficient animal protein for human health, here