References

Brown, M.S., C.H. Ponce and R. Pulikanti, 2006. Adaptation of beef cattle to high-concentrate diets: Performance and ruminal metabolism. J. Anim. Sci., 84: 25-33.
PubMed  |  Direct Link  |  

Calsamiglia, S., A. Ferret and M. Devant, 2002. Effects of pH and pH fluctuations on microbial fermentation and nutrient flow from a dual-flow continuous culture system. J. Dairy Sci., 85: 574-579.
Direct Link  |  

Chaney, A.L. and E.P. Marbach, 1962. Modified reagents for determination of urea and ammonia. Clin. Chem., 8: 130-132.
PubMed  |  Direct Link  |  

Coleman, G.S., 1979. The role of rumen protozoa in the metabolism of ruminants given tropical feeds. Trop. Anim. Prod., 4: 199-213.
Direct Link  |  

Dehority, B.A. and A.A. Odenyo, 2003. Influence of diet on the rumen protozoal fauna of indigenous African wild ruminants. J. Eukaryotic Microbiol., 50: 220-223.
Direct Link  |  

Dobicki, A., J. Pree, A. Zachwieja and R. Kwasnicki, 2006. Saccharomyces cerevisiae preparations in the feeding of cows and their effect on milk yield and composition as well as rumen microorganisms. Electron. J. Polish Agric. Univ., Vol. 9, No. 4.

Franzolin, R. and B.A. Dehority, 1996. Effect of prolonged high-concentrate feeding on ruminal protozoa concentrations. J. Anim. Sci., 74: 2803-2809.
CrossRef  |  PubMed  |  Direct Link  |  

Grubb, J.A. and B.A. Dehority, 1975. Effects of an abrupt change in ration from all roughage to high concentrate upon rumen microbial numbers in sheep. Applied Microbiol., 31: 262-267.
Direct Link  |  

Han, C.Y., D.X. Lu, Z.L. Tan and M. Hu, 2002. Effects of protozoa regulating on degradation and application of dietary protein in the sheep rumen. Feed Ind., 23: 14-16.

Hong, H.S., L. Ke, B.Q. Huang and X.J. Lin, 2001. The grazing rate of strombidium sucaltum, using a modified fluorescence-labeled technique. Oceanol. Limnol. Sinica, 32: 260-266.
Direct Link  |  

Hristov, A.N., K.L. Grandeen, J.K. Ropp and M.A. McGuire, 2004. Effect of sodium laurate on ruminal fermentation and utilization of ruminal ammonia nitrogen for milk protein synthesis in dairy cows. J. Dairy Sci., 87: 1820-1831.
Direct Link  |  

Ivan, M., L. Neill, R. Forster, R. Alimon, L.M. Rode and T. Entz, 2000. Effects of isotricha, dasytricha, entodinium and total fauna on ruminal fermentation and duodenal flow in wethers fed different diets. J. Dairy Sci., 83: 776-787.
Direct Link  |  

Jounay, J.P., 1996. Effect of rumen protozoa on nitrogen utilization by ruminants. J. Nutr., 126: 1335-1336.
Direct Link  |  

Koenig, K.M., C.J. Newbold, F.M. McIntosh and L.M. Rode, 2000. Effects of protozoa on bacterial nitrogen recycling in the rumen. J. Anim. Sci., 78: 2431-2445.
Direct Link  |  

Lang, P., X. Huang, Y. Qian and G.J. Ding, 2003. Progression on technique of reducing sludge production. Chinese J. Environ. Sci., 4: 44-52.

Lebaron, P., P. Servais, M. Troussellier, C. Courties and G. Muyzer et al., 2001. Microbial community dynamics in Mediterranean nutrient-enriched seawater mesocosms: Changes in abundances, activity and composition. FEMS Microbiol. Ecol., 34: 255-266.
PubMed  |  

Leng, R.A., 1982. Dynamics of protozoa in the rumen of sheep. Br. J. Nutr., 48: 399-415.

NRC, 1981. National Research Council, Nutritional Energetics of Domestic Animals and Glossary of Energy Terms. National Academy Press, Washington, DC.

Nhan, N.T.H., N.T. Ngu, N. Thiet, T.R. Preston and R.A. Leng, 2007. Determination of the optimum level of a soybean oil drench with respect to the rumen ecosystem, feed intake and digestibility in cattle. Livest. Res. Rural Dev., 19: 117-118.

Orskov, E.R. and F.D. DeB-Hovell, 1977. Rumen digestion of hay (measured with dacron bags) by cattle given sugar cane or pangola hay. Trop. Anim. Prod., 3: 9-11.

Santra, A., S.A. Karim and O.H. Chaturvedi, 2007. Rumen enzyme profile and fermentation characteristics in sheep as affected by treatment with sodium lauryl sulfate as defaunating agent and presence of ciliate protozoa. Small Rumin. Res., 67: 126-137.
CrossRef  |  Direct Link  |  

Wallace, R.J. and C.A. McPherson, 1987. Factors affecting the rate of breakdown of bacterial protein in rumen fluid. Br. J. Nutr., 59: 313-323.
CrossRef  |  

Wang, M.Z., H.R. Wang, G.X. Li, H.C. Cao and Z.J. Lu, 2008. The preliminary report on rumen protozoa grazing rate on bacteria with fluorescence-labeled technique. Sci. Agric. Sinica, 7: 101-105.
Direct Link  |  

Wang, M.Z., H.R. Wang, G.X. Li, J. Zhang and H.C. Cao, 2007. Effects of rations in different starch to filter paper ratioon rumen fermentation and microbes in vitro. Acta Zoonutrimenta Sinica, 19: 654-662.

Xu, H.L., M. Wang, M.Z. Zhu and W.B. Song, 2004. Effects of population growth of marine ciliates on the ammonia accumulation at different concentrations of glucose. Acta Zool. Sinica, 50: 551-558.

Zhu, W.Y., 2004. Rumen Microbiology. In: Ruminant Nutrition, Feng, Y.L. (Ed.). Science Press, Beijing, pp: 66-69.