6Chen K. H., J. Huber., J. Simas, C. B. Thuer, P. Yu, S. C.Chan. ,F. Santos, Z. Wu., R., S S. wingle and E. J. Depeters. 1995.Effect of enzyme treatement or steam-flaking of sorghum grain on laction and digestion in dairy cows[J] .Dairy sci., (78): 1721-17
7Lewis, g, e., W. K. Sanchez, C, W. Hunt, M, A, Guy, G. T.Prichard, B. I. Swanson, and R. J. Treacher. Effect of direct-fed fibrolytic enzymes on the lactationalperformance of dairy coes[J] .Dairy Sci, 1999,82:611-617.
8Kopecny J, Marouek M, Houb K. overnf Vhodnosti aplicace,Cellular Trichoderma Viride do Krmnych davek prezvykavcu (Testing the suitability of the addition of Trichoderma Viride celluases to feed rations forrurninants)[J]. zivocisna vyroba, 1987, (32) :587-
9Hristov, A. N, L. M. Rode, K A. Beauchemin and R. L Wuerfel. 1996 Effect of a commercial enzyme preparation on barley silage in vitro and in sacco dry matter degradability[J]. Proceedings.Western Section, American Society of Animal Science, Rapid City.Sou
10Beauehemin K. A., L. M. Rode and V. J. H. Sewalt. 1995.Fibrolytic enzymes increase fibre digestility and growth rate of steers fed dry forages. Can[J]. Arum Sci(75):641-644.