1Slyter L L, Chalupa W, Ohjen RR, Weaver J M. Sulfur influences on rumen microorganisms in vitro and in sheep and calves [J]. Anita Sci, 1986, 63(6) : 19 ,49 -59.
2NRC. Nutrient Requirements of Goats : Angora, Dairy and meat goats in temperate and tropical countries. National Academy Press. 1985.
3Joblin K.N. Isolationists, enumeration and maintenance of vamcn anaerobic fungi in rolltubes. Appl. environ. Microbiol. 1981,42,1119 -22.
4今井壮一.ル4メン纤毛虫の同定の收引き.宫兽会报,1997,30(1):3—5.
5Akin D E, Gordon G 1 R, Hogan J P. Rumen bacterial and fungal degradation of Dignitaries pentzii grown with or without sulfur[J]. Applied and Environmental Microbiology. 1983,46:738 - 748.
6Cameiro. Heloisa. Impact of sulfur levels and sources for goats ph.D. Thesis. Oklahoma state university. 1995,115.
7McAllister Milton M, Sulfur toxicosis and polioencep halomalaciain ruminants, ph.D. Thesis. Colorad state university. 1991,119.
8Gordon - GLR et al. Can anaerobic fungi be manipulated in the sheep rumen to improve the utilization of poor -quality feed? Recent advances in animal nutrition in Australia. 2001,13: 43-48; 16 ref.