2Dehority B A,Orpin C G. Development of and natural fluctua tion in, rumen microbial population [M]. In.. Hobsun P N Stewart C S,. The Rumen Microbial Ecosystem. London Blaekie Academic&Professional, 1997.
5Kopecny J, Hodrova B, Stewart C S. The effect of rumen chitinolytic bacteria on cellulolytic anaerobic fungi[J]. Lett Ap- pl Microbiol, 1996,23 : 199-202.
7Brown M S,Ponce C H,Pulikanti R. Adaptation of beef cattle to high-concentrate diets: Performance and ruminal metabo- lisml[J]. Journal of Animal Science, 2006, 84 (E. Suppl. ) :25-33.