2Prescott . L. M, Harley. J. P. , Klein, D. A. , Microbiology [ J ]. WCB Publishers, 1996:935.
3Taylor WH. Proteinases of the stomach in health arid dis- ease Physical[ J]. Rev. 1962, (42) :519 - 553.
4Mayer E A. The physiofogy of gastric storage and empty- ing. In : Johnson, L. R. , A|pers. D. H. , Christensen, J. , Ja-cobson E D, Walsh J. H. (Eds.), Physiology of the Gastro- intestinal Tract [ M ], 3rd ed. , vol. 1. Raven Press, New York, 1994:929 - 976.
9Canibe N, Jensen BB. Fermented and non fermented liq- uid feed to growing pigs : Effect on aspects of gastrointesti- nal ecology and growth performance [ J ]. J Anim Sci, 2003, (81) :2019 - 2031.
10Scholtena RHJ, Van der CMC. Peet-Schweringa, et al. Fermented co-products and fermented compound diets forpigs: A review [J]. Animal Feed Science and Technolo- gy, 1999,(82):1 -19.
