Agarwal, N, Kamra, DN, Chaudhary, LC, Agarwal, I, Sahoo, A and Pathak, NN 2002. Microbial status and rumen enzyme profile of crossbred calves fed on different microbial feed additives. Letters in Applied Microbiology 34, 329–336.
Allen, MS 2000. Effects of diet on short-term regulation of feed intake by lactating dairy cattle. Journal of Dairy Science 83, 1598–1624.
Association of Official Analytical Chemists (AOAC) 1997. Official methods of analysis. 16th edition. Association of Official Analytical Chemists, Gaithersburg, MD, USA.
Association of Official Analytical Chemists (AOAC) 2000. Official methods of analysis. 17th edition. Association of Official Analytical Chemists, Arlington, VA, USA.
Cheng, KF, Wang, C, Zhang, GW, Du, HS, Wu, ZZ, Liu, Q, Guo, G, Huo, WJ, Zhang, J, Chen, L and Pei, CX 2020. Effects of betaine and rumen-protected folic acid supplementation on lactation performance, nutrient digestion, rumen fermentation and blood metabolites in dairy cows. Animal Feed Science and Technology 262, 114445.
Cobanova, K, Faix, S, Placha, I, Mihalikova, K, Varadyova, Z, Kisidayova, S and Gresakova, L 2017. Effects of different dietary selenium sources on antioxidant status and blood phagocytic activity in sheep. Biological Trace Element Research 175, 339–346.
Cotta, MA 1988. Amylolytic activity of selected species of ruminal bacteria. Applied and Environmental Microbiology 54, 772–776.
Ferret, A, Plaixats, J, Caja, G, Gasa, J and Prió, P 1999. Using markers to estimate apparent dry matter digestibility, faecal output and dry matter intake in dairy ewes fed Italian ryegrass hay or alfalfa hay. Small Ruminant Research 33, 145–152.
Grilli, E, Gallo, A, Fustini, M, Fantinati, P and Piva, A 2013. Microencapsulated sodium selenite supplementation in dairy cows: effects on selenium status. Animal 7, 1944–1949.
Hidiroglou, M, Heaney, DP and Jenkins, KJ 1968. Metabolism of inorganic selenium in rumen bacteria. Canadian Journal of Physiology and Pharmacology 46, 229–232.
Kongmun, P, Wanapat, M, Pakdee, P and Navanukraw, C 2010. Effect of coconut oil and garlic powder on in vitro fermentation using gas production technique. Livestock Science 127, 38–44.
Mansson, HL 2008. Fatty acids in bovine milk fat. Food and Nutrition Research 52, 1–3.
Maxin, G, Glasser, F, Hurtaud, C, Peyraud, JL and Rulquin, H 2011. Combined effects of trans-10,cis-12 conjugated linoleic acid, propionate, and acetate on milk fat yield and composition in dairy cows. Journal of Dairy Science 94, 2051–2059.
McDonald, P, Edwards, RA, Greenhalgh, JFD, Morgan, CA, Sinclair, LA and Wilkinson, RG 2011. Animal nutrition, 7th edition. Pearson Education, London, UK.
Mihalikova, K, Gresakova, L, Boldižarova, K, Faix, S, Leng, L and Kisidayova, S 2005. The effects of organic selenium supplementation on the rumen ciliate population in sheep. Folia Microbiologica 50, 353–356.
Miller, GL 1959. Use of dinitrosalicylic acid reagent for determination of reducing sugar. Analytical Chemistry 31, 426–428.
Murphy, MR 1982. Analyzing and presenting pH data. Journal of Dairy Science 65,161–163.
National Research Council (NRC) 2001. Nutrient requirements of dairy cattle, 7th revised edition. The National Academy Press, Washington, DC, USA.
Razo-Rodriguez, OED, Ramirez-Bribiesca, JE, Lopez-Arellano, R, Revilla-Vazquez, AL, Gonzalez-Munoz, SS, Cobos-Peralta, MA, Hernandez-Calva, LM and Mcdowell, LR 2013. Effects of dietary level of selenium and grain on digestive metabolism in lambs. Czech Journal of Animal Science 58, 253–261.
Reynolds, CK 2006. Production and metabolic effects of site of starch digestion in dairy cattle. Animal Feed Science and Technology 130, 78–94.
Reynolds, CK and Kristensen, NB 2008. Nitrogen recycling through the gut and the nitrogen economy of ruminants: an asynchronous symbiosis. Journal of Animal Science 86, E293–E305.
Statistics Analysis System (SAS) 2002. User’s guide: Statistics, Version 9 Edition. Statistical Analysis Systems Institute, Cary, NC, USA.
Shi, LG, Xun, WJ, Yue, WB, Zhang, CX, Ren, YS, Liu, Q, Wang, Q and Shi, L 2011. Effect of elemental nano-selenium on feed digestibility, rumen fermentation, and purine derivatives in sheep. Animal Feed Science and Technology 163, 136–142.
Spears, JW 2003. Trace mineral bioavailability in ruminants. The Journal of Nutrition 133, 1506S–1509S.
Sun, P, Wang, J, Liu, W, Bu, DP, Liu, SJ and Zhang, KZ 2017. Hydroxy-selenomethionine: a novel organic selenium source that improves antioxidant status and selenium concentrations in milk and plasma of mid-lactation dairy cows. Journal of Dairy Science 100, 9602–9610.
Van Soest, PJ, Robertson, JB and Lewis, BA 1991. Methods for dietary fiber, neutral detergent fiber and non-starch polysaccharides in relation to animal nutrition. Journal of Dairy Science 74, 3583–3597.
Wales, WJ, Kolver, ES, Thorne, PL and Egan, AR 2004. Diurnal variation in ruminal pH on the digestibility of highly digestible perennial ryegrass during continuous culture fermentation. Journal of Dairy Science 87, 1864–1871.
Wang, Y and McAllister, TA 2002. Rumen microbes, enzymes and feed digestion-a review. Asian-Australasian Journal of Animal Science 15, 1659–1676.
Wang, C, Liu, Q, Yang, WZ, Dong, Q, Yang, XM, He, DC, Zhang, P, Dong, KH and Huang, YX 2009. Effects of selenium yeast on rumen fermentation, lactation performance and feed digestibilities in lactating dairy cows. Livestock Science 126, 239–244.
Wang, C, Liu, Q, Guo, G, Huo, WJ, Ma, L, Zhang, YL, Pei, CX, Zhang, SL and Wang, H 2016. Effects of rumen-protected folic acid on ruminal fermentation, microbial enzyme activity, cellulolytic bacteria and urinary excretion of purine derivatives in growing beef steers. Animal Feed Science and Technology 221, 185–194.
Webb, S, Bartos, J, Boles, R, Hasty, E, Thuotte, E and Thiex, NJ 2014. Simultaneous determination of arsenic, cadmium, calcium, chromium, cobalt, copper, iron, lead, magnesium, manganese, molybdenum, nickel, selenium, and zinc in fertilizers by microwave acid digestion and inductively coupled plasma-optical emission spectrometry detection: single-laboratory validation of a modification and extension of AOAC 2006.03. Journal of AOAC International 97, 700–711.
Wereszka, K and Michalowski, T 2012. The ability of the rumen ciliate protozoan Diploplastron affine to digest and ferment starch. Folia Microbiologica 57, 375–377.
Williams, CH, David, DJ and Iismaa, O 1962. The determination of chromic oxide in faeces samples by atomic absorption spectrophotometry. The Journal of Agricultural Science 59, 381–385.
Yu, Z and Morrison, M 2004. Improved extraction of PCR-quality community DNA from digesta and fecal sample. BioTechniques 36, 808–812.
Zhang, GW, Wang, C, Du, HS, Wu, ZZ, Liu, Q, Guo, G, Huo, WJ, Zhang, J, Zhang, YL, Pei, CX and Zhang, SL 2020. Effects of folic acid and sodium selenite on growth performance, nutrient digestion, ruminal fermentation and urinary excretion of purine derivatives in Holstein dairy calves. Livestock Science 231, 103884.