1. Al-Bar, A., A. Ismail, P.R. Cheeke and H. Nakaue, 1993, Effect of dietary Yucca shidegera extract (Deodorase) on environmental ammonia and growth performance of chickens and rabbits, Proc. West. Sect. Am. Soc. Anim. Sci. 44:106.
2. Applebaum, S.W., and Birk, Y., 1979, Saponins, pp. 539–566 in: Herbivores. Their Interaction With Secondary Plant Metabolites, G.A. Rosenthal and D.H. Janzen, Eds., Academic Press, New York.
3. Birk, Y., and Peri, I., 1980, Saponins, pp. 161–182 in: Toxic Constituents of Plant Foodstuffs, I.E. Liener, Ed., Academic Press, New York.
4. Bridges, C.H., Camp, B.J., Livingston, C.W., and Bailey, E.M., 1987, Kleingrass (Panicum coloratum) poisoning in sheep, Vet. Pathol. 24:525.
5. Camp, B.J., Bridges, C.H., Hill, D.W., Patamalai, B., and Wilson, S., 1988, Isolation of a steroidal sapogenin from a sheep fed Agave lecheguilla, Vet. Human Tox. 30:533.