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Tannin bioassay using semi-automated gas production technique

Published online by Cambridge University Press:  23 November 2017

E.F. Nozella ,
S.L.S. Cabral Filho ,
I.C.S. Bueno ,
P.B. Godoy ,
C. Longo ,
A.L. Abdalla  and
D.M.S.S. Vitti
E.F. Nozella*
Affiliation:
Animal Nutrition Laboratory – Centre for Nuclear Energy in Agriculture (CENA/USP) CP 96, CEP 13400-970, Piracicaba, São Paulo, Brazi.
S.L.S. Cabral Filho
Affiliation:
Animal Nutrition Laboratory – Centre for Nuclear Energy in Agriculture (CENA/USP) CP 96, CEP 13400-970, Piracicaba, São Paulo, Brazi.
I.C.S. Bueno
Affiliation:
Animal Nutrition Laboratory – Centre for Nuclear Energy in Agriculture (CENA/USP) CP 96, CEP 13400-970, Piracicaba, São Paulo, Brazi.
P.B. Godoy
Affiliation:
Animal Nutrition Laboratory – Centre for Nuclear Energy in Agriculture (CENA/USP) CP 96, CEP 13400-970, Piracicaba, São Paulo, Brazi.
C. Longo
Affiliation:
Animal Nutrition Laboratory – Centre for Nuclear Energy in Agriculture (CENA/USP) CP 96, CEP 13400-970, Piracicaba, São Paulo, Brazi.
A.L. Abdalla
Affiliation:
Animal Nutrition Laboratory – Centre for Nuclear Energy in Agriculture (CENA/USP) CP 96, CEP 13400-970, Piracicaba, São Paulo, Brazi.
D.M.S.S. Vitti
Affiliation:
Animal Nutrition Laboratory – Centre for Nuclear Energy in Agriculture (CENA/USP) CP 96, CEP 13400-970, Piracicaba, São Paulo, Brazi.
*
E-mail: efnozell@cena.usp.br
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Extract

Brazil has arid regions where livestock production is limited by forage source. However, some native herbaceous browses have a dry tolerance and had been used as animal feed. 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 effects of different treatments (oven-, shade- and sun-drying and treatment with urea) on phenolics compounds and on the biological activity of tannins using the in vitro gas method with the addition of polyethylene glycol (PEG).

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2005 , 2005 , pp. 218
Copyright
Copyright © The British Society of Animal Science 2005

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References

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