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• AOAC (1990) Association of Official Analytical Chemists. Official methods of analysis. 15th ed., Vol. 1, AOAC, Washington, DC, pp. 69-79. Baba ASH, Castro FB, Ørskov ER (2002) Partitioning of energy and degradability of browse plants in vitro and the implications of blocking the effects of tannin by the addition of polyethylene glycol. Anim. Feed Sci. Technol. 95: 93–104. Bae HD, McAllister TA, Yanke J, Cheng K-J, Muir AD (1993) Effects of condensed tannins on endoglucanase activity and filter paper digestion by Fibrobacter succinogenes S85. Appl. Environ. Microbiol. 59: 2132–2138. Beauchemin KA, McGinn SM, Martinez TF, McAllister TA (2007) Use of condensed tannin extract from quebracho trees to reduce methane emissions from cattle. J. Anim. Sci. 85: 1990–1996. Bento MHL, Makkar HPS, Acamovic T (2005) Effect ofmimosa tannin and pectin on microbial protein synthesis and gas production during in vitro fermentation of 15N-labelled maize shoots. Anim. Feed Sci. Technol. 123-124:365–377. Blümmel M, Makkar HPS, Becker K (1997) In vitro gas production- A technique revisied. J. Anim. Physiol. Anim. Nutr. 77: 24-34. Blümmel M, Aiple KP, Steingass H, Becker K (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: 157-167. Blümmel M, Lebzien P (2001) Predicting ruminal microbial efficiencies of dairy rations by in vitro techniques. Liv. Prod. Sci. 68(2-3): 107-117. Carulla JE, Kreuzer M, Machmuller A, Hess HD (2005) Supplementation of Acacia mearnsii tannins decreases methanogenesis and urinary nitrogen in forage-fed sheep. Aust. J. Agric. Res. 56:961–970. Cieslak A, Zmora P, Pers-Kamczyc E, Stochmal A, Sadowinska A, Salem AZ, Szumacher-Strabel M (2014) Effects of two sources of tannins (Quercus L. and Vaccinium vitis idaea L.) on rumen microbial fermentation: an in vitro study. Ital. J. Anim. Sci. 13(2): 290-294. Düzgüneş O, Kesici T, Gürbüz F (1983) İstatistik Metodları, A.Ü. Yayınları, A831, Ankara. Field JA, Lettinga G (1987) The methanogenic toxicity and anaerobic degradability of hydrolysable tannins. Water Res. 21: 367–374. Galyean M (1989) Laboratory Procedure in Animal Nutrition Research, Department of Animal and Range Sciences, New Mexico State University,USA. Getachew G, Makkar HPS, Becker K (2000) Effect of polyethylene glycol on in vitro degradability of nitrogen and microbial protein synthesis from tannin-rich browse and herbaceous legumes. Brit. J. Nutr. 84: 73–83. Hassanat F, Benchaar C (2013) Assessment of the effect of condensed (acacia and quebracho) and hydrolysable (chestnut and valonea) tannins on rumen fermentation and methane production in vitro. J.Sci. Food Agric. 93(2): 332-339. Hagerman AE, Butler LG (1989) Choosing appropriate methods and standards for assaying tannins. J. Chem. Ecol. 11:1535–1544. Hess HD, Tiemann TT, Noto F, Carulla JE, Kreuzer M (2006) Strategic use of tannins as means to limit methane emission from ruminant livestock. Int. Congr. Ser. 1293:164–167. Jayanegara A, Makkar HPS, Becker K (2009) Methane reducing properties of polyphenol containing plants simple phenols and purified tannins in in vitro gas production method, FAO-IAEA International Symposium ‘Sustainable Improvement of Animal Production and Health’, 8 to 11 June 2009, Vienna, Austria. pp 92-93. Jayanegara A, Leiber F, Kreuzer M (2012) Meta-analysis of the relationship between dietary tannin level and methane formation in ruminants from in vivo and in vitro experiments. J. Anim. Physiol. Anim. Nutr. 96:365–375. Jayanegara A, Goel G, Makkar HP, Becker K (2015) Divergence between purified hydrolysable and condensed tannin effects on methane emission, rumen fermentation and microbial population in vitro. Anim. Feed Sci. Technol. 209:60–68. Jones GA, McAllister TA, Muir AD, Cheng KJ (1994) Effects of sainfoin (Onobrychis viciifolia Scop.) condensed tannins on growth and proteolysis by four strains of ruminal bacteria. Appl. Environ. Microbiol. 60: 1374–1378. Khiaosa-Ard R, Bryner SF, Scheeder MRL, Wettstein HR, Leiber F, Kreuzer M (2009) Evidence for the inhibition of the terminal step of ruminal α-linolenic acid biohydrogenation by condensed tannins. J. Dairy Sci. 92:177–188. Krueger WK, Gutierrez-Banuelos H, Carstens GE, Min BR, Pinchak WE, Gomez RR (2010) Effects of dietary tannin source on performance, feed efficiency, ruminal fermentation, and carcass and non-carcass traits in steers fed a high-grain diet. Anim. Feed Sci. Technol. 159:1–9. Lowry JB, McSweeney CS, Palmer B (1996) Changing perceptions of the effect of plant phenolics on nutrient supply in the ruminant. Aust. J. Agric. Res. 47: 829-842. Makkar HPS, Blümmel M, Becker K (1995) In vitro effects of and interactions between tannins and saponins and the fate of tannins in the rumen. J.Sci. Food Agric. 69: 481–493. McSweeney CS, Palmer B, Bunch R, Krause DO (1999) Isolation and characterization of proteolytic ruminal bacteria from sheep and goats fed the tannin-containing shrub legume Calliandra calothyrsus. J. Appl. Environ. Microbiol. 65:3075–3083. McSweeney CS, Palmer B, McNeil DM, Krause DO (2001) Microbial interactions with tannins: nutritional consequences for ruminants. Anim. Feed Sci. Technol. 91: 83–93. Menke KH, Raab L, Salewski A, Steingass H, Fritz D, Schneider W (1979) The estimation of the digestibility and metabolizable energy content of ruminant feedingstuffs from the gas production when they are incubated with rumen liquor in vitro. J. Agr. Sci. 93 (1): 217-222. Min BR, Barry TN, Attwood GT, McNabb WC (2003) The effect of condensed tannins on the nutrition and health of ruminants fed fresh temperate forages: a review. Anim. Feed Sci. Technol. 106:3-19. Min B, Wright C, Ho P (2014) The effect of phytochemical tannins containing diet on rumen fermentation characteristics and microbial diversity dynamics in goats using 16S rDNA amplicon pyrosequencing. Agric. Food Anal. Bacteriol. 4:195–211. MINITAB (1996) MINITAB Release 11 for Windows, State College, Pennsylvania, USA. Nelson KE, Pell AN, Doane PH, Giner-Chavez BI, Schofield P (1997) Chemical and biological assays to evaluate bacterial inhibition by tannins. J. Chem. Ecol. 23: 1175–1194. Nsahlai I, Fon F, Basha N (2011) The effect of tannin with and without polyethylene glycol on in vitro gas production and microbial enzyme activity. S. Afr. J. Anim. Sci. 41:337–344. Orskov ER, McDonald I (1979) The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage. J. Agr. Sci. 92: 499-503. Patra AK, Saxena J (2011) Exploitation of dietary tannins to improve rumen metabolism and ruminant nutrition. J. Sci. Food Agric. 91:24–37. Poncet C, R´emond D (2002) Rumen digestion and intestinal nutrient flows in sheep consuming pea seeds: the effect of extrusion or chestnut tannin addition. Anim. Res. 51:201–216. Preston TR (1995) Biological and chemical analytical methods. In: Tropical Animal Feeding: A Manual for Research Workers. (Eds Preston TR), FAO, Rome, pp. 191–264. Reed JD (1995) Nutritional toxicology of tannins and related polyphenols in forage legumes. J. Anim. Sci. 73: 1516-1528. Stewart CS (1991) The rumen bacteria. In: Rumen Microbial Metabolism and Ruminant Digestion. (Eds Jouany JP), INRA ed, Paris, France, pp. 15–26. Tabacco E, Borreani G, Crovetto GM, Galassi G, Colombo D, Cavallarin L (2006) Effect of chestnut tannin on fermentation quality, proteolysis, and protein rumen degradability of alfalfa silage. J. Dairy Sci. 89:4736–4746. Waghorn GC, Shelton ID (1997) Effect of condensed tannins in Lotus corniculatus on the nutritive value of pasture for sheep. J. Agric. Sci. 128: 365–372. Van Soest PJ, Robertson JB, Lewis A (1991) Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition. J. Dairy Sci. 74: 3583-3597.