Polyphenolics and tannins effect on in vitro digestibility of selected Acacia species leaves

Rubanza, Chrispinus D. K.; Shem, M. N.; Otsyina, R.; Bakengesa, S.; Ichinohe, Toshiyoshi; Fujihara, Tsutomu

doi:10.1016/j.anifeedsci.2004.12.004

Cited by 120 publications

(89 citation statements)

References 26 publications

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“…In the present experiment the increases above the control in total gas production due to PEG inclusion were 20.6, 24.7 and 30.8% for P. lentiscus, A. andrachne and J. communis, respectively. This is in agreement with findings of Rubanza et al (2005) that foliage from Acacia species gave different responses to PEG inclusion.…”

Section: Discussionsupporting

confidence: 83%

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The effect of polyethylene glycol (PEG 8000) supplementation on in vitro gas production kinetics of leaves from tannin containing trees

Kamalak¹,

Canbolat²,

Şahin³

et al. 2006

SA J. An. Sci.

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The objective of this study was to determine the effect of inclusion of polyethylene glycol (PEG 8000) during in vitro incubation on gas production kinetics, organic matter digestibility (OMD) and the metabolisable energy (ME) content of foliage from the tannin containing tree species, Pistica lentiscus, Arbutus andrachne and Juniperus communis. The amount of gas produced when the foliage was incubated with buffered rumen fluid, was determined after 0, 3, 6, 12, 24, 48, 72 and 96 h of incubation in the presence of PEG at inclusions rates of 15, 30, 60 and 90 mg and in the absence of PEG. Their kinetics were described using the equation p = a + b (1-e -ct ). Addition of PEG resulted in an increased gas production at almost all incubation times in all tree species. However species showed variable responses. After 3 h of incubation the PEG addition showed no significant effect on gas production when the foliage from A. andrachne was incubated, but had a significant effect on gas production as duration of incubation extended. The increase in gas production in response to increased levels of PEG inclusion was linear for P. lentiscus and J. communis. However, when the PEG inclusion rates exceeded 60 mg there was no significant increase in gas production when A. andrachne was incubated. The estimated parameters such as gas production rate(c) and gas production (a) from the immediately soluble fraction were not affected by the level PEG treatment, except that PEG addition at 90 mg had a significant effect on the gas production (a) from immediately soluble fraction of leaves of J. communis. Gas production (b) from the insoluble fraction (mL) and potential gas production (a+b), OMD and ME of tree leaves increased significantly with increasing levels of PEG addition. However, when PEG inclusion exceeded 60 mg these parameters showed no significant increase when leaves from A. andrachne were incubated. Although the mean increase in OMD per mg PEG supplementation was 0.131 digestibility units, the increase in ME per mg PEG supplementation was 0.0201 ME units. The elevated levels of gas produced, and increased OMD and ME estimates with the inclusion of PEG demonstrated the negative effect of tannins in foliage on digestibility.

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Section: Discussionsupporting

confidence: 83%

“…Leaves from P. lentiscus, A. andrachne and J. communis had low CP concentrations compared to Acacia species (Rubanza et al, 2005). Therefore, herbivores consuming these leaves should receive supplemental protein from other sources.…”

Section: Discussionmentioning

confidence: 99%

The effect of polyethylene glycol (PEG 8000) supplementation on in vitro gas production kinetics of leaves from tannin containing trees

Kamalak¹,

Canbolat²,

Şahin³

et al. 2006

SA J. An. Sci.

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“…The percentage increase in gas production as result of the blocking effect of PEG on tannins would be an indicator of the biological activity of tannins on rumen microbial fermentation. Indeed, a significant increase in in vitro gas production when material was incubated in the presence of PEG has been reported for different tanniferous substrates (Barber et al, 1990;Canbolat et al, 2005;Rubanza et al, 2005;Singh et al, 2005). Based on this analysis, the species with a highest tannin anti-nutritional activity would be A. campestris followed by S. tenacissima.…”

Section: ) Chemical Composition and Digestibility Of Algerian Browmentioning

confidence: 98%

Chemical composition and digestibility of some browse plant species collected from Algerian arid rangelands

Boufennara

López

Bousseboua

et al. 2012

Span. j. agric. res.

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Many wild browse and bush species are undervalued mainly because of insufficient knowledge about their potential feeding value. The objective was to evaluate some nutritional attributes of various Algerian browse and shub species (Atriplex halimus, Artemisia campestris, Artemisia herba-alba, Astragalus gombiformis, Calobota saharae, Retama raetam, Stipagrostis pungens, Lygeum spartum and Stipa tenacissima). Chemical composition, phenols and tannins concentration, in vitro digestibility, in vitro gas production kinetics and in vitro bio-assay for assessment of tannins using buffered rumen fluid, and in situ disappearence of the edible parts of the plants (leaves, thin twigs and flowers) were determined. In general, protein content in dicotyledon species was always greater than in monocotyledon grasses, these showing higher neutral and acid detergent fibre and lower lignin contents than dicots. The tannin concentrations varied considerably between species, but in general the plants investigated in this study had low tannin contents (except for Artemisia spp. and S. tenacissima). Monocots showed lower in vitro and in situ digestibilities, fermentation rate, cumulative gas production and extent of degradation than dicot species. The plants were clustered by principal components analysis in two groups: poor-quality grasses and the most digestible dicot species. Chemical composition (neutral detergent fibre and protein) and digestibility were the main influential variables determining the ranking. In conclusion, A. halimus, A. campestris, A. herba-alba and A. gombiformis can be considered of greater nutritional value than the highly fibrous and low digestible grasses (S. pungens, L. spartum and S. tenacissima) that should be considered emergency roughages.

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“…Browse contain high amounts of secondary plant compounds like tannins (Rubanza et al, 2005). Browsers are adapted to them by secretion of tanninbinding salivary proteins (Robbins et al, 1987;Austin et al, 1989).…”

Section: Discussionmentioning

confidence: 99%

“…As the present browse samples were of temperate type, information on the chemical composition and fermentation of native sp. (Abdulrazak, 2000;Rubanza et al, 2005) was added to considerations (Table 6). The aNDFom and ADFom content of lucerne hay was similar to the temperate browse leaves.…”

Section: Discussionmentioning

confidence: 99%

Chemical composition and fermentation characteristics of feedstuffs for giraffes (<i>Giraffa camelopardalis</i>) in German zoos

Gussek¹,

Große‐Brinkhaus²,

Hummel³

et al. 2016

J. Anim. Feed Sci.

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Polyphenolics and tannins effect on in vitro digestibility of selected Acacia species leaves

Cited by 120 publications

References 26 publications

The effect of polyethylene glycol (PEG 8000) supplementation on in vitro gas production kinetics of leaves from tannin containing trees

The effect of polyethylene glycol (PEG 8000) supplementation on in vitro gas production kinetics of leaves from tannin containing trees

Chemical composition and digestibility of some browse plant species collected from Algerian arid rangelands

Chemical composition and fermentation characteristics of feedstuffs for giraffes (<i>Giraffa camelopardalis</i>) in German zoos

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