Association of Official Analytical Chemists (AOAC) 1995. Official methods of analysis, 16th edition. AOAC, Washington, DC, USA.
Beauchemin, KA and McGinn, SM 2005. Methane emissions from feedlot cattle fed barley or corn diets. Journal of Animal Science 83, 653–661.10.2527/2005.833653x
Belanche, A, Doreau, M, Edwards, JE, Moorby, JM, Pinloche, E and Newbold, CJ 2012. Shifts in the rumen microbiota due to the type of carbohydrate and level of protein ingested by dairy cattle are associated with changes in rumen fermentation. The Journal of Nutrition 142, 1684–1692.10.3945/jn.112.159574
Denman, SE and McSweeney, CS 2006. Development of a real-time PCR assay for monitoring anaerobic fungal and cellulolytic bacterial populations with in the rumen. FEMS Microbial Ecology 58, 572–582.10.1111/j.1574-6941.2006.00190.x
Dittmann, MT, Hammond, KJ, Kirton, P, Humphries, DJ, Crompton, LA, Ortmann, S, Misselbrook, TH, Südekum, KH, Schwarm, A, Kreuzer, M, Reynolds, CK and Clauss, M 2016. Influence of ruminal methane on digesta retention and digestive physiology in non-lactating dairy cattle. British Journal of Nutrition 116, 763–773.10.1017/S0007114516002701
Ferraretto, LF, Crump, PM and Shaver, RD 2013. Effect of cereal grain type and corn grain harvesting and processing methods on intake, digestion, and milk production by dairy cows through a meta-analysis. Journal of Dairy Science 96, 533–550.10.3168/jds.2012-5932
Firkins, JL, Eastridge, ML, St-Pierre, NR and Noftsger, SM 2001. Effects of grain variability and processing on starch utilization by lactating dairy cattle. Journal of Animal Science 79, E218–E238.10.2527/jas2001.79E-SupplE218x
García-González, R, Giráldez, FJ, Mantecón, AR, González, JS and López, S 2012. Effects of rhubarb (Rheum spp.) and frangula (Frangula alnus) on intake, digestibility and ruminal fermentation of different diets and feedstuffs by sheep. Animal Feed Science and Technology 176, 131–139.10.1016/j.anifeedsci.2012.07.016
Garcia-Gonzalez, R, Gonzalez, JS and Lopez, S 2010. Decrease of ruminal methane production in Rusitec fermenters through the addition of plant material from rhubarb (Rheum spp.) and alder buckthorn (Frangula alnus). Journal of Dairy Science 93, 3755–3763.10.3168/jds.2010-3107
García-González, R, López, S, Fernández, M and González, JS 2008. Dose–response effects of Rheum officinale root and Frangula alnus bark on ruminal methane production in vitro. Animal Feed Science and Technology 145, 319–334.10.1016/j.anifeedsci.2007.05.040
Guyader, J, Ungerfeld, EM and Beauchemin, KA 2017. Redirection of metabolic hydrogen by inhibiting methanogenesis in the rumen simulation technique (RUSITEC). Frontiers in Microbiology 8, 393.10.3389/fmicb.2017.00393
Hatew, B, Podesta, SC, Van Laar, H, Pellikaan, WF, Ellis, JL, Dijkstra, J and Bannink, A 2015. Effects of dietary starch content and rate of fermentation on methane production in lactating dairy cows. Journal of Dairy Science 98, 486–499.10.3168/jds.2014-8427
Hegarty, R and Gerdes, R 1998. Hydrogen production and transfer in the rumen. Recent Advances in Animal Nutrition 12, 37–44.
Henderson, G, Cox, F, Kittelmann, S, Miri, VH, Zethof, M, Noel, SJ, Waghorn, GC and Janssen, PH 2013. Effect of DNA extraction methods and sampling techniques on the apparent structure of cow and sheep rumen microbial communities. PLoS One 8, e74787.10.1371/journal.pone.0074787
Hook, SE, Northwood, KS, Wright, ADG and McBride, BW 2009. Long-term monensin supplementation does not significantly affect the quantity or diversity of methanogens in the rumen of the lactating dairy cow. Applied and Environmental Microbiology 75, 374–380.10.1128/AEM.01672-08
Janssen, PH 2010. Influence of hydrogen on rumen methane formation and fermentation balances through microbial growth kinetics and fermentation thermodynamics. Animal Feed Science and Technology 160, 1–22.10.1016/j.anifeedsci.2010.07.002
Jiao, J, Lu, Q, Tan, Z, Guan, L, Zhou, C, Tang, S and Han, X 2014. In vitro evaluation of effects of gut region and fiber structure on the intestinal dominant bacterial diversity and functional bacterial species. Anaerobe 28, 168–177.10.1016/j.anaerobe.2014.06.008
Kargar, S, Khorvash, M, Ghorbani, GR, Alikhani, M and Yang, WZ 2010. Short communication: effects of dietary fat supplements and forage: concentrate ratio on feed intake, feeding, and chewing behavior of Holstein dairy cows. Journal of Dairy Science 93, 4297–4301.10.3168/jds.2010-3168
Kartchner, RJ and Theurer, B 1981. Comparison of hydrolysis methods used in feed, digesta, and fecal starch analysis. Journal of Agricultural and Food Chemistry 29, 8–11.10.1021/jf00103a003
Kim, KH, Arokiyaraj, S, Lee, J, Oh, YK, Chung, HY, Jin, GD, Kim, EB, Kim, EK, Lee, Y and Baik, M 2016. Effect of rhubarb (Rheum spp.) root on in vitro and in vivo ruminal methane production and a bacterial community analysis based on 16S rRNA sequence. Animal Production Science 56, 402–408.10.1071/AN15585
Koike, S and Kobayashi, Y 2001. Development and use of competitive PCR assays for the rumen cellulolytic bacteria: Fibrobacter succinogenes, Ruminococus albus and Ruminococcus flavefaciens
. Fems Microbiology Letters 204, 361–366.10.1111/j.1574-6968.2001.tb10911.x
Martinez-Fernandez, G, Denman, SE, Yang, C, Cheung, J, Mitsumori, M and McSweeney, CS 2016. Methane inhibition alters the microbial community, hydrogen flow, and fermentation response in the rumen of cattle. Frontiers in Microbiology 7, 1122.10.3389/fmicb.2016.01122
McGinn, SM, Beauchemin, KA, Coates, T and Colombatto, D 2004. Methane emissions from beef cattle: effects of monensin, sunflower oil, enzymes, yeast, and fumaric acid. Journal of Animal Science 82, 3346–3356.10.2527/2004.82113346x
Owens, FN, Secrist, DS, Hill, WJ and Gill, DR 1998. Acidosis in cattle: a review. Journal of Animal Science 76, 275–286.10.2527/1998.761275x
Rooke, JA, Wallace, RJ, Duthie, CA, McKain, N, de Souza, SM, Hyslop, JJ, Ross, DW, Waterhouse, T and Roehe, R 2014. Hydrogen and methane emissions from beef cattle and their rumen microbial community vary with diet, time after feeding and genotype. British Journal of Nutrition 112, 398–407.10.1017/S0007114514000932
Stevenson, D and Weimer, P 2007. Dominance of Prevotella and low abundance of classical ruminal bacterial species in the bovine rumen revealed by relative quantification real-time PCR. Applied Microbiology and Biotechnology 75, 165–174.10.1007/s00253-006-0802-y
Ungerfeld, EM 2015. Shifts in metabolic hydrogen sinks in the methanogenesis-inhibited ruminal fermentation: a meta-analysis. Frontiers in Microbiology 6, 37.
Van Soest, PJ, Robertson, JB and Lewis, BA 1991. Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition. Journal of Dairy Science 74, 3583–3597.10.3168/jds.S0022-0302(91)78551-2
Vyas, D, McGinn, SM, Duval, SM, Kindermann, M and Beauchemin, KA 2016. Effects of sustained reduction of enteric methane emissions with dietary supplementation of 3-nitrooxypropanol on growth performance of growing and finishing beef cattle. Journal of Animal Science 94, 2024–2034.10.2527/jas.2015-0268
Wang, L, Li, D, Bao, C, You, J, Wang, Z, Shi, Y and Zhang, H 2008. Ultrasonic extraction and separation of anthraquinones from Rheum palmatum L. Ultrasonics Sonochemistry 15, 738–746.10.1016/j.ultsonch.2007.12.008
Wang, M, Janssen, PH, Sun, XZ, Muetzel, S, Tavendale, M, Tan, ZL and Pacheco, D 2013. A mathematical model to describe in vitro kinetics of H2 gas accumulation. Animal Feed Science and Technology 184, 1–16.10.1016/j.anifeedsci.2013.05.002
Wang, M, Sun, XZ, Janssen, PH, Tang, SX and Tan, ZL 2014. Responses of methane production and fermentation pathways to the increased dissolved hydrogen concentration generated by eight substrates in in vitro ruminal cultures. Animal Feed Science and Technology 194, 1–11.10.1016/j.anifeedsci.2014.04.012
Wang, M, Ungerfeld, EM, Wang, R, Zhou, CS, Basang, ZZ, Ao, SM and Tan, ZL 2016a. Supersaturation of dissolved hydrogen and methane in rumen of Tibetan Sheep. Frontiers in Microbiology 7, 850.
Wang, M, Wang, R, Janssen, PH, Zhang, XM, Sun, XZ, Pacheco, D and Tan, ZL 2016b. Sampling procedure for the measurement of dissolved hydrogen and volatile fatty acids in the rumen of dairy cows. Journal of Animal Science 94, 1159–1169.10.2527/jas.2015-9658
Wang, M, Wang, R, Sun, X, Chen, L, Tang, S, Zhou, C, Han, X, Kang, J, Tan, Z and He, Z 2015. A mathematical model to describe the diurnal pattern of enteric methane emissions from non-lactating dairy cows post-feeding. Animal Nutrition 1, 329–338.10.1016/j.aninu.2015.11.009
Wang, M, Wang, R, Xie, T, Janssen, PH, Sun, X, Beauchemin, KA, Tan, Z and M., G 2016c. Shifts in rumen fermentation and microbiota are associated with dissolved ruminal hydrogen concentrations in lactating dairy cows fed different types of carbohydrates. Journal of Nutrition 146, 1714–1721.10.3945/jn.116.232462
Wang, M, Wang, R, Yang, S, Deng, JP, Tang, SX and Tan, ZL 2016d. Effects of three methane mitigation agents on parameters of kinetics of total and hydrogen gas production, ruminal fermentation and hydrogen balance using in vitro technique. Animal Science Journal 87, 224–232.10.1111/asj.12423
Wang, M, Wang, R, Zhang, X, Ungerfeld, EM, Long, D, Mao, H, Jiao, J, Beauchemin, KA and Tan, Z 2017. Molecular hydrogen generated by elemental magnesium supplementation alters rumen fermentation and microbiota in goats. British Journal of Nutrition 118, 401–410.10.1017/S0007114517002161
Yang, WZ, Beauchemin, KA and Rode, LM 2001. Barley processing, forage: concentrate, and forage length effects on chewing and digesta passage in lactating cows. Journal of Dairy Science 84, 2709–2720.10.3168/jds.S0022-0302(01)74725-X
Zhang, HF and Zhang, ZY 1998. Animal nutrition parameters and feeding standard. China Agriculture Press, Beijing, China.