1. Revisiting the effects of different dietary sources of selenium on the health and performance of dairy animals: A review;Arshad M.;Biology Trace Elements Research Journal,2021
2. A History of Animal Welfare Science
3. Chambliss, C.G. and Kunkle, W.E. (2003) Grass Tetany in Cattle. University of Florida IFAS Extension, Gainesville, FL.
4. Elliott M. (2009) Grass tetany in cattle - treatment and prevention. Primefact 42
5. (1) 1-4. Available at: www.dpi.nsw.gov.au/primefacts (accessed 3 December 2014).