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Tannic Acid

The effects of tannin-rich plants on parasitic nematodes in ruminants

Apart from the obvious role of plants in herbivore nutrition, they are also a rich source of bioactive products that can operate either to the benefit or the detriment of grazing animals. Here, we review the available evidence for the potential beneficial effects that plant-derived bioactive substances can have on gastrointestinal parasites. Tannin-rich plants have attracted most attention for their effect on interna
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Nutritional Influences on Skatole Formation and Skatole Metabolism in the Pig

Abstract Skatole is a tryptophan (TRP) metabolite with fecal odor. Together with the testicular steroid androstenone it is regarded as a main determinant of boar taint, even if elevated concentrations of skatole occur occasionally in gilts and barrows. Skatole concentrations in adipose tissue result from a complex process, which includes the availability of TRP and the presence of specialized bacteria in the gut in n
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The effects of condensed tannins from Dorycnium rectum on skatole and indole ruminal biogenesis for grazing sheep

AbstractSkatole and indole are flavour compounds formed in the rumen, which are key factors in the pastoral flavour of meat and milk products. A selection of indolic compounds has been screened for their potential to form skatole and indole on in vitro fermentation, with rumen inocula collected from New Zealand pasture-fed sheep. Typically, 8% (P < 0.005) of added tryptophan was converted to indole and 54% (P <
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COMMISSION IMPLEMENTING REGULATION (EU) 2017/66 of 14 December 2016 concerning the authorisation of tannic acid as a feed additive for all animal species

COMMISSION IMPLEMENTING REGULATION (EU) 2017/66 of 14 December 2016 concerning the authorisation of tannic acid as a feed additive for all animal species (Text with EEA relevance) “…The European Food Safety Authority (‘the Authority’) concluded in its opinion of 11 September 2014 ( 3 ) that, under the proposed conditions of use in feed this substance does not have adverse effects on animal health, human h
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Application of Mössbauer spectroscopy to the study of tannins inhibition of iron and steel corrosion

Application of Mössbauer spectroscopy to the study of tannins inhibition of iron and steel corrosion Authors: Jaén, Juan A.; de Obaldía, J.; Rodríguez, M. V. Affiliation: AA(Depto. de Química Física, Universidad de Panamá, CITEN), AB(Escuela de Química, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad de Panamá), AC(Escuela de Química, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad
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Studies on Emblica officinalis derived tannins for their immunostimulatory and protective activities against coccidiosis in industrial broiler chickens.

Abstract The present study reports the effect of Emblica officinalis (EO) derived tannins on humoral immune responses and their protective efficacy against Eimeria infection in chickens. Tannins were extracted from EO and characterized by HPLC. EO derived tannins (EOT) and commercial tannins (CT) were orally administered in broiler chicks in graded doses for three consecutive days, that is, 5th-7th days of age. On da
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Potential of tannin-rich plants for modulating ruminal microbes and ruminal fermentation in sheep.

Rira M1, Morgavi DP1, Archimède H2, Marie-Magdeleine C2, Popova M1, Bousseboua H3, Doreau M4. Author information Abstract The objective of this work was to study nutritional strategies for decreasing methane production by ruminants fed tropical diets, combining in vitro and in vivo methods. The in vitro approach was used to evaluate the dose effect of condensed tannins (CT) contained in leaves of Gliricidia sepium, L
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Interaction of gut microflora with tannins in feeds.

Goel G1, Puniya AK, Aguilar CN, Singh K. Author information Abstract Tannins (hydrolyzable and condensed) are water-soluble polyphenolic compounds that exert antinutritional effects on ruminants by forming complexes with dietary proteins. They limit nitrogen supply to animals, besides inhibiting the growth and activity of ruminal microflora. However, some gastrointestinal microbes are able to break tannin-protein com
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assessment of the potential of cinnamaldehyde, condensed tannins, and saponins to modify milk fatty acid composition of dairy cows.

Benchaar C1, Chouinard PY. Author information Abstract This study was conducted to determine whether feeding cinnamaldehyde (main component of cinnamon bark essential oil; Cinnamon cassia), condensed tannins from quebracho trees (Schinopsis balansae), or saponins from Yucca schidigera altered the milk fatty acid profile of dairy cows. For this purpose, 4 lactating cows were used in 4 x 4 Latin square design (28-d per
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Effect of condensed tannins supplementation through leaf meal mixture on voluntary feed intake, immune response and worm burden in Haemonchus contortus infected sheep.

Pathak AK1, Dutta N2, Banerjee PS3, Goswami TK4, Sharma K5. Author information Abstract The study was carried out to assess the effect of condensed tannins (CT) supplementation through leaf meal mixture (LMM) on feed intake, humoral [Immunoglobulin G (IgG)], cell mediated immune response (CMI) and faecal egg counts in Haemonchus contortus infected sheep. Eighteen sheep were randomly divided into three groups (negativ
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