3. Bhatta R. Reducing enteric methane emission using plant secondary metabolites. Sejian V, Gaughan J, Baumgard L, Prasad C, editorsClimate change impact on livestock: adaptation and mitigation. New Delhi, India: Springer; 2015. p. 273–84.
https://doi.org/10.1007/978-81-322-2265-1_17
4. Wallace RJ, McEvan NR, McIntosh FM, Teferedegne B, Newbold CJ. Natural products as manipulators of rumen fermentation. Asian-Australas J Anim Sci 2002; 15:1458–68.
https://doi.org/10.5713/ajas.2002.1458
5. Sun L, Zhang H, Zhuang Y. Preparation of free, soluble conjugate, and insoluble-bound phenolic compounds from peels of rambutan (
Nephelium lappaceum) and evaluation of antioxidant activities
in vitro
. J Food Sci 2012; 77:C198–204.
https://doi.org/10.1111/j.1750-3841.2011.02548.x
7. Poungchompu O, Wanapat M, Wachirapakorn C, Wanapat S, Cherdthong A. Manipulation of ruminal fermentation and methane production by dietary saponins and tannins from mangosteen peel and soapberry fruit. Arch Anim Nutr 2009; 63:389–400.
https://doi.org/10.1080/17450390903020406
8. AOAC. Official Methods of Analysis. 19th edGaithersburg, MD, USA: Association of Official Analytical Chemists; 2012.
11. Wanapat M, Poungchompu O. Method for estimation of tannin by vanillin-HCL method (A Modified Method of Burns, 1971). Khon Kaen, Thailand: Department of Animal Science, Khon Kaen University; 2001.
12. Wanapat M, Ngamsaeng A. Method for estimation of crude saponins (A Modified Method of Kwon et al., 2003). Khon Kaen, Thailand: Department of Animal Science, Khon Kaen University; 2004.
13. Galyean M. Laboratory procedure in animal nutrition research. Las Cruces, NM, USA: Department of Animal and Range Sciences, New Mexico State University; 1989.
14. Samuel M, Sagathewan S, Thomas J, Mathen G. An HPLC method for estimation of volatile fatty acids of ruminal fluid. Indian J Anim Sci 1997; 67:805–7.
15. Crocker CL. Rapid determination of urea nitrogen in serum or plasma without deproteinization. Am J Med Technol 1967; 33:361–5.
16. Wanapat M, Gunun P, Anantasook N, Kang S. Changes of rumen pH, fermentation and microbial population as influenced by different ratios of roughage (rice straw) to concentrate in dairy steers. J Agric Sci 2014; 152:675–85.
https://doi.org/10.1017/S0021859613000658
18. SAS (Statistical Analysis System). User’s guide: Statistic, Version 93th Edition. Cary NC, USA: SAS Inst. Inc; 2013.
19. Beauchemin KA, Kreuzer M, O’Mara F, McAllister TA. Nutritional management for enteric methane abatement: a review. Aust J Exp Agric 2008; 48:21–7.
https://doi.org/10.1071/EA07199
20. Van Soest PJ, Robertson JBA. Laboratory manual for animal science. Ithaca, NY, USA: Cornell University Press; 1985.
21. Wanapat M, Pimpa O. Effect of ruminal NH3-N levels on ruminal fermentation, purine derivatives, digestibility and rice straw intake in swamp buffaloes. Asian-Australas J Anim Sci 1999; 12:904–7.
https://doi.org/10.5713/ajas.1999.904
22. Foiklang S, Wanapat M, Norrapoke T.
In vitro rumen fermentation and digestibility of buffaloes as influenced by grape pomace powder and urea treated rice straw supplementation. Anim Sci J 2016; 87:370–7.
https://doi.org/10.1111/asj.12428
25. Baruah L, Malik PK, Kolte AP, Dhali A, Bhatta R. Methane mitigation potential of phyto-sources from Northeast India and their effect on rumen fermentation characteristics and protozoa
in vitro
. Vet World 2018; 11:809–18.
https://doi.org/10.14202/vetworld.2018.809-818
28. Tedeschi LO, Ramírez-Restrepo CA, Muir JP. Developing a conceptual model of possible benefits of condensed tannins for ruminant production. Animal 2014; 8:1095–105.
https://doi.org/10.1017/S1751731114000974
29. Shokryzadan P, Rajion MA, Goh YM, et al. Mangosteen peel can reduce methane production and rumen biohydrogenation
in vitro
. S Afr J Anim Sci 2016; 46:419–31.
http://dx.doi.org/10.4314/sajas.v46i4.10
30. Paengkoum P, Phonmun T, Liang JB, Huang XD, Tan HY, Jahromi MF. Molecular weight, protein binding affinity and methane mitigation of condensed tannins from mangosteen-peel (
Garcinia mangostana L). Asian-Australas J Animal Sci 2015; 28:1442–8.
https://doi.org/10.5713/ajas.13.0834
32. Aditya S. The effect of rambutan peel (Nephelium lappaceum) as reducing agent on in vitro methane production within creating environment friendly farming. In : Köfer J, Schobesberger H, editorsAnimal hygiene and sustainable livestock production. Proc XVth Int Congr Anim Hygiene; 2011 July 3–7; Vienna, Austria.