6Shamberger R J. Biochemistry of selenium[M]. New York: Plenum Press, 1983.
7Ash A J, L Solomona, W T Waroka. Effectiveness of low-cost protein supplement for goats in the South Pacific[J].J South Pac Agri, 1992,1(3):55-58.
8Peacock C P. Measures for assessing the productivity of sheep and goat[J]. Agri Systm, 1987,23 : 197-210.
9Turan B, Acan N L, Ulusu N N, et al. A comparative study on effect of dietary selenium and vitamin E on some antioxidant enzyme activities of liver and brain tissues[J].Biol Trace Elem Res,2001, 81(2) :139-152.
10Ammerman C B, Baker D H, Lewis A J. Bioavailability of nutrients for animals-amino acids, minerals, and vitamins[M]. Cademic Press,1995.
