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Biological activity of tannins of Brazilian browses using semi-automated gas production technique. 1. Plants from Bahia state

  • E F Nozella (a1), S L S Cabral Filho (a1), I C S Bueno (a1), P B Godoy (a1), C Longo (a1), J. H. Borges (a2) and D. M. S. S. Vitti (a1)...

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Brazil has arid regions where livestock production is limited by forage source. However, some native herbaceous browses have a dry tolerance and have been used as animal feeds. Some of those plants have anti nutritional compounds such as tannins that can interfere on intake and digestibility. Tannins have a high affinity to proteins and could make these molecules unavailable for animal. Compounds as polyethylene glycol (PEG) has been used on tannin studies, because it has more affinity with tannins than proteins. Based on that, it is possible to evaluate the nutritive potential of tanniniferous plants, using PEG in gas based techniques for assessing anti nutritional factors in tanniniferous plants for ruminants. The aim of this work was to investigate the biological activity of tannins using the in vitro gas method with the addition of polyethylene glycol (PEG).

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Bueno, I.C.S.; Cabral, Filho, S.L.S., Gobbo, S.P.; Louvandini, H.; Vitti, D.M.S.S.; Abdalla, A.L. 2005. Influence of inoculum source in a gas production method. Animal Feed Science and Technology, 123-124: 95-105.
Makkar, H.P.S. 2000 Quantification of tannins in tree foliage. Vienna: FAO; IAEA, 2000. cap.3, p.6-8: Measurement of total phenolics and tannins using Folin-Ciocalteu method. (Laboratory manual).
Mauricio, R.M.; Mould, F.L.; Dhanoa, M.S.; Owen, E.; Channa, K.S.; Theodorou, M.K. 1999. A semi-automated in vitro gas production technique for ruminant feedstuff evaluation. Animal Feed Science and Technology, 79: 321-333.
SAS Institute. 2000. The SAS system for windows. Release 8.01. Cary.

Biological activity of tannins of Brazilian browses using semi-automated gas production technique. 1. Plants from Bahia state

  • E F Nozella (a1), S L S Cabral Filho (a1), I C S Bueno (a1), P B Godoy (a1), C Longo (a1), J. H. Borges (a2) and D. M. S. S. Vitti (a1)...

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