1. Hungate RE. The rumen and its microbes. New York, USA: Academic Press; 1966.
2. Russell JB. Rumen microbiology and its role in ruminant nutrition. Ithaca, NY, USA: J.B. Russell Publishing Co; 2002.
4. Goad DW, Goad CL, Nagaraja TG. Ruminal microbial and fermentative changes associated with experimentally induced subacute acidosis in steers. J Anim Sci 1998; 76:234–41.
5. Lean IJ, Wade LK, Curtis MA, Porter J. New approaches to control of ruminal acidosis in dairy cattle. Asian-Australas J Anim 2000; 13:Suppl266–9.
8. Huo W, Zhu W, Mao S. Impact of subacute ruminal acidosis on the diversity of liquid and solid-associated bacteria in the rumen of goats. World J Microbiol Biotechnol 2014; 30:669–80.
12. Duffield T, Plaizier JC, Fairfield A, et al. Comparison of techniques for measurement of rumen pH in lactating dairy cows. J Dairy Sci 2004; 87:59–66.
13. Erwin E, Marco G, Emery E. Volatile fatty acid analyses of blood and rumen fluid by gas chromatography. J Dairy Sci 1961; 44:1768–71.
14. Chaney AL, Marbach EP. Modified reagents for determination of urea and ammonia. Clin Chem 1962; 8:130–2.
15. Rius AG, Kittelmann S, Macdonald KA, et al. Nitrogen metabolism and rumen microbial enumeration in lactating cows with divergent residual feed intake fed high-digestibility pasture. J Dairy Sci 2012; 95:5024–34.
16. Abdo Z, Schüette UM, Bent SJ, et al. Statistical methods for characterizing diversity of microbial communities by analysis of terminal restriction fragment length polymorphisms of 16S rRNA genes. Environ Microbiol 2006; 8:929–38.
20. Tajima K, Arai S, Ogata K, et al. Rumen bacterial community transition during adaptation to high-grain diet. Anaerobe 2000; 6:273–84.
21. Plaizier JC. Replacing chopped alfalfa hay with alfalfa silage in barley grain and alfalfa-based total mixed rations for lactating dairy cows. J Dairy Sci 2004; 87:2495–505.
22. Owens FN, Secrist DS, Hill WJ, Gill DR. Acidosis in cattle: a review. J Anim Sci 1998; 76:275–86.
25. In SH, Shin HT, Baig SY, Chung KH. Effects of lasalocid supplementation on the ruminal fermentation and digestibility of Korean native goats. J Anim Sci Technol 2001; 43:101–10.
27. Whitford MF, Forster RJ, Beard CE, Gong J, Teather RM. Phylogenetic analysis of rumen bacteria by comparative sequence analysis of cloned 16S rRNA genes. Anaerobe 1998; 4:153–63.
30. Freeman WM, Walker SJ, Vrana KE. Quantitative RT-PCR: pitfalls and potential. BioTechniques 1999; 26:112–25.
31. Koike S, Kobayashi Y. Development and use of competitive PCR assays for the rumen cellulolytic bacteria: F
ibrobacter succinogenes,
Ruminococcus albus and
Ruminococcus flavefaciens
. FEMS Microbiol Lett 2001; 204:361–6.
32. Chiquette J, Allison M, Rasmussen M. Use of
Prevotella bryantii 25A and a commercial probiotic during subacute acidosis challenge in midlactation dairy cows. J Dairy Sci 2012; 95:5985–95.
34. Allison MJ, Robinson IM, Dougherty RW, Bucklin JA. Grain overload in cattle and sheep: changes in microbial populations in the cecum and rumen. Am J Vet Res 1975; 36:181–5.
36. Huber TL, Cooley JH, Goetsch DD, Das NK. Lactic acid-utilizing bacteria in ruminal fluid of a steer adapted from hay feeding to a high-grain ration. Am J Vet Res 1976; 37:611–3.
38. Counotte GHM, Prins RA. Regulation of lactate metabolism in the rumen. Vet Res Commun 1981; 5:101–15.
43. Stevenson DM, Weimer PJ. Dominance of
Prevotella and low abundance of classical ruminal bacterial species in the bovine rumen revealed by relative quantification real-time PCR. Appl Microbiol Biotechnol 2007; 75:165–74.
45. Ouwerkerk D, Klieve AV, Forster RJ. Enumeration of
Megasphaera elsdenii in rumen contents by real-time Taq nuclease assay. J Appl Microbiol 2002; 92:753–8.