4Smet, S. De.,D. I. Demeyer, and C. J. Van Nevel. Effect of defaunatian and hay: concentrate ratio on fermentation, fibre digestion and passage in the rumen of sheep. Animal Feed sci Tech. 1992,37: 333 ~ 344. 被引量:1
5Williams. A.G., and Susan. Withers. Effect of ciliate protozoa on the activity of polyseccharide- degrading enzymes and fibre break down in the rumen ecosystem. Journal of Applied Becteriology. 1991, 70:144 ~ 155. 被引量:1