1. National Geographic. ‘The future of food’ special compilation issue. 2015;227(3):1–113. A very well presented and documented series on feeding the world of the future. Presents information on predictions, needs, and sources of food.
2. Ash C, Jasny BR, Malakoff DA, Sugden AM. Food security. Feeding the future. Introduction. Science. 2010 Feb 12;327(5967):797–833.
3. Fraser D. Understanding animal welfare: the science in its cultural context. Oxford: Wiley-Blackwell; 2008 .Covers the field of animal welfare from industrial to rural understandings. A very thoughtful and well balanced presentation.
4. Five Freedoms. 2015. Available from: https://en.wikipedia.org/wiki/Five_freedoms .
5. Brambell Committee. Report of the technical committee to enquire into the welfare of animals kept under intensive livestock husbandry systems. 1965. Report No.: 2836.