Methane production from commercial dairy rations estimated using an in vitro gas technique

AOAC, 1995. Official Methods of Analysis, 16th ed. Association of Official Analytical Chemists, Arlington, VA, USA. Blümmel, 1999, A note on the stoichiometrical relationship of short chain fatty acid production and gas evolution in vitro in feedstuffs of widely differing quality, J. Anim. Physiol. Anim. Nutr., 81, 157, 10.1046/j.1439-0396.1999.813205.x Crocker, 1998, Influence of processed corn grain in diets of dairy cows on digestion of nutrients and milk composition, J. Dairy Sci., 81, 2394, 10.3168/jds.S0022-0302(98)70131-6 Crutzen, P.J., 1995. The role of methane in atmospheric chemistry and climate. In: von Engelhardt, W., Leonhard-Marek, S., Breves, G., Giesecke, D.E. (Eds.), Ruminant Physiology: Digestion, Metabolism, Growth and Reproduction. Proceedings of the 8th International Symposium on Ruminant Physiology, Stuttgart, Germany, pp. 291–315. DeRamus, 2003, Methane emissions of beef cattle on forages: efficiency of grazing management systems, J. Environ. Qual., 32, 269, 10.2134/jeq2003.0269 Dohme, 2001, Ruminal methanogenesis as influenced by individual fatty acids supplemented to complete ruminant diets, Lett. Appl. Microbiol., 32, 47, 10.1046/j.1472-765x.2001.00863.x Eun, 2004, Methane production by mixed ruminal cultures incubated in dual-flow fermenters, J. Dairy Sci., 87, 112, 10.3168/jds.S0022-0302(04)73148-3 Fievez, 2003, Fish oil as potent rumen methane inhibitors and associated effects on rumen fermentation in vitro and in vivo, Anim. Feed Sci. Technol., 104, 41, 10.1016/S0377-8401(02)00330-9 Getachew, 2001, In vitro rumen fermentation and gas production: influence of yellow grease, tallow, corn oil and their potassium soaps, Anim. Feed Sci. Technol., 93, 1, 10.1016/S0377-8401(01)00264-4 Holter, 1992, Methane production in dry and lactating dairy cows, J. Dairy Sci., 75, 2165, 10.3168/jds.S0022-0302(92)77976-4 Johnson, 1995, Methane Emissions from cattle, J. Anim. Sci., 73, 2483, 10.2527/1995.7382483x Joy, 1997, Effects of corn processing on the site and extent of digestion in lactating cows, J. Dairy Sci., 80, 2087, 10.3168/jds.S0022-0302(97)76154-X Lee, 2003, Methane production potential of feed ingredients as measured by in vitro gas test, Asian–Aus. J. Anim. Sci., 16, 1143, 10.5713/ajas.2003.1143 Menke, 1988, Estimation of the energetic feed value obtained from chemical analysis and in vitro gas production using rumen fluid, Anim. Res. Dev., 28, 7 Moss, 2002, Environmental control of methane production by ruminants, 67 National Research Council, 2001. Nutrient Requirements of Dairy Cattle, 7th revised ed. National Academy of Sciences, Washington, DC, USA. Ørskov, 1979, The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage, J. Agric. Sci., 92, 499, 10.1017/S0021859600063048 Robinson, 1999, Influence of storage time and temperature on in vitro digestion of neutral detergent fibre at 48h, and comparison to 48h in sacco neutral detergent fibre digestion, Anim. Feed Sci. Technol., 80, 257, 10.1016/S0377-8401(99)00062-0 SAS (Statistical Analysis Systems), 1988. SAS Procedures Guide Release 6.03 Edition. SAS Institute Inc., Cary, NC, USA. Sauer, 1998, Methane output and lactation response in Holstein cattle with monensin or unsaturated fat added to the diet, J. Anim. Sci., 76, 906, 10.2527/1998.763906x Sniffen, 1992, A net carbohydrate and protein system for evaluating cattle diets, J. Anim. Sci., 70, 3562, 10.2527/1992.70113562x Sukhija, 1998, Rapid method for determination of total fatty acid content and composition of feedstuffs and feces, J. Agric. Food Chem., 36, 1202, 10.1021/jf00084a019 Van Soest, 1991, Methods for dietary fiber, neutral detergent fiber, and non-starch polysaccharides (NSP) in relation to animal nutrition, J. Dairy Sci., 74, 3583, 10.3168/jds.S0022-0302(91)78551-2 Wilkerson, 1995, The prediction of methane production of Holstein cows by several equations, J. Dairy Sci., 78, 2402, 10.3168/jds.S0022-0302(95)76869-2