Agar, Sandie. Small Animal Nutrition. Oxford: Butterworth-Heinemann, 2001. Print.
Agricultural Research Council. The Nutrient Requirements of Ruminant Livestock: Technical Review by an Agricultural Research Council Working Party. Slough: Published on behalf of the Agricultural Research Council by Commonwealth Agricultural Bureaux, 1980. Print.
Alderman, G., B. R. Cottrill, and Agricultural and Food Research Council. Energy and Protein Requirements of Ruminants: An Advisory Manual Prepared by the AFRC Technical Committee on Responses to Nutrients. Wallingford: CAB International, 1993. Print.
Case, Linda P. and ScienceDirect (Online service). Canine and Feline Nutrition: A Resource for Companion Animal Professionals. 3rd ed. Maryland Heights, Mo: Mosby, 2011. Web. <https://ezproxy.lib.gla.ac.uk/login?url=https://www.sciencedirect.com/science/book/9780323066198>.
Frape, David. Equine Nutrition and Feeding. 4th ed. Chichester, West Sussex, U.K.: Wiley-Blackwell, 2010. Print.
Fraser, Andrew Ferguson, and Donald M. Broom. Farm Animal Behaviour and Welfare. 3rd ed. London: Baillière Tindall, 1990. Print.
Geor, Raymond J., Patricia A. Harris, and Manfred Coenen, eds. Equine Applied and Clinical Nutrition: Health, Welfare and Performance. Edinburgh: Saunders Elsevier, 2013. Web. <https://ezproxy.lib.gla.ac.uk/login?url=https://www.sciencedirect.com/science/book/9780702034220>.
Hand, Michael S., and Lon D. Lewis. Small Animal Clinical Nutrition. 4th ed. Topeka, Kan: Mark Morris Institute, 2000. Print.
Joshi, Nanda P., Thomas H. Herdt, and International Conference on Production Disease in Farm Animals. Production Diseases in Farm Animals: 12th International Conference. Wageningen: Wageningen Academic Publishers, 2006. Print.
McDonald, Peter. Animal Nutrition. 7th ed. Harlow: Prentice Hall/Pearson, 2011. Print.
McNamara, J. P. Principles of Companion Animal Nutrition. Upper Saddle River, N.J.: Pearson/Prentice Hall, 2006. Print.
National Research Council (U.S.). Nutrient Requirements of Dairy Cattle. 7th rev. ed. Washington, D.C.: National Academy Press, 2001. Web. <https://www.nap.edu/read/9825/chapter/1>.
Ørskov, E. R. Protein Nutrition in Ruminants. Second edition. London: Academic Press, 1992. Print.
---. The Feeding of Ruminants: Principles and Practice. 2nd ed. Welton: Chalcombe Publications, 1998. Print.
Ørskov, E. R., and Margaret Ryle. Energy Nutrition in Ruminants. London: Elsevier, 1990. Print.
‘Our Resources | NC3Rs’. N.p., n.d. Web. <http://www.nc3rs.org.uk/our-resources>.
Poole, Trevor B., Ruth Robinson, and Universities Federation for Animal Welfare. The UFAW Handbook on the Care and Management of Laboratory Animals. 6th ed. Harlow: Longman Scientific & Technical, 1987. Print.
Suttle, N. F. Mineral Nutrition of Livestock. 4th ed. Wallingford, Oxfordshire, UK: CABI, 2010. Print.
‘The RUMNUT Computer Package, Version 5.2 Manual’. N.p., n.d. Web. <http://www.chalcombe.co.uk/rumnut.htm>.
Underwood, Eric J., and N. F. Suttle. The Mineral Nutrition of Livestock. 3rd ed. Wallingford, Oxon: CABI Pub, 1999. Print.