3I.Kumprecht,EZobac,V.Siske et al.Effects of dietary mannan oligosaccharide level on liveweight and feed efficiency of broilers.Poultry Sci., 1997,76(supp 1 1):132(Abstr).
10[3]Wang R J, et al. Can 2000 years of herbal medicine history help us solve problems in the year 2000[A]. Biotechnology in the Feed Industry[M]. Lyons T P. Jacques K A. UK: Nottingham University Press, Loughborough, Leics. 1998, 14: 273-291.