Nutritive evaluation of some Acacia tree leaves from Kenya

Abdulrazak, S. A.; Fujihara, Tsutomu; Ondiek, JO; Ørskov, E. R.

doi:10.1016/s0377-8401(00)00133-4

Cited by 107 publications

(88 citation statements)

References 27 publications

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“…High CP values in browse (133-194 g/kg DM) could correct deficient nitrogen in basal roughages. Presented results on browse chemical compositions (Table 1) were comparable to other workers (Le Houérou, 1980;Topps, 1997;Abdulrazak et al, 2000). The latter authors reported high CP contents (103 to 336 g/kg DM) in browse.…”

Section: Discussionsupporting

confidence: 87%

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Content of phenolics and tannins in leaves and pods of some Acacia and Dichrostachys species and effects on in vitro digestibility

Runbanza¹,

Shem²,

Otsyina³

et al. 2003

J. Anim. Feed Sci.

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Four browse legume foliages (leaves and pod fruits) from three species of Acacia (A. polyacantha, A. tortilis, A. nilotica) and Dichrostachys sp. native to Tanzania were evaluated for nutritive potential to establish levels and effect of normal phenolics and tannins antinutritive factors (ANFs) on in vitro feed digestibility (IVD). Total extractable phenolics (TP), tannins (TT) were estimated by Folin-Ciocalteu assay, and condensed tannins (CT) by butanol/HCl assay. In leaves, total proanthocyanidins were assayed into constituent anthocyanidins' flavonoids by high performance liquid chromatography (HPLC). Organic matter degradability (OMD) was estimated in vitro by gas production technique. Adverse effects of tannin's ANF on IVD were assessed by polyethylene glycol (PEG) tannin bioassay. Crude protein (CP) varied (P<0.05) between fodder species and foliages. Leaves had (P<0.05) higher CP (141-194 g/kg DM) in Dichrostachys sp. and A polyacantha, respectively, compared to pods (133-142 g/kg DM) in A. tortilis and Dichrostachys sp., respectively. Neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL) va- . polyacantha), and 0.009 (A. nilotica) to 4.392 (Dichrostachys sp.) for delphinidins, cyanidins and pelargonidin, respectively. The browse foliages had relatively high tannin content greater than 5% DM, a beneficial level in animal feeding and nutrition, and thus could impair feed digestibility. OMD varied significantly (P<0.05) both between fodder species and foliage components. Pods had higher (P<0.05) gas production (GP) and OMD than leaves. Addition of PEG improved (P<0.05) gas production, IVD and metabolizable energy (ME) in leaves and pods by binding tannins. Leaves had higher response on gas production and IVD due to PEG treatment compared to pods except A. nilotica. Improved gas production and digestibility due to PEG treatment indicate nutritive potential in browse fodder previously depressed by tannin ANFs.Therefore, phenolics and tannins ANFs could limit utilization of browse fodder nutritive potential as supplements to ruminants consuming low quality roughages. Utilization of browse legume fodder could be optimized through reduction of tannin antinutritive activity. Under farmers' conditions, optimal utilization of browse could be achieved through feeding a mixture of tanniferous browse with other feeds especially high in nitrogen to dilute tannin antinutritive activity.

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Section: Discussionsupporting

confidence: 87%

“…High polyphenolics in Acacia spp. has been reported elsewhere (Reed, 1986;Abdulrazak et al, 2000), or even Dichrostachys sp. (Shayo and Udén, 1999).…”

Section: Discussionmentioning

confidence: 70%

Content of phenolics and tannins in leaves and pods of some Acacia and Dichrostachys species and effects on in vitro digestibility

Runbanza¹,

Shem²,

Otsyina³

et al. 2003

J. Anim. Feed Sci.

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“…The results indicated that the TP and HT concentrations were negatively correlated with BS-N (R 0 (0.56, P B0.01) but positively correlated with lignin (R 00.57, P B0.01). Similar correlations were obtained by Abdulrazak et al (2000) between TP and HT concentrations and crude protein (R0 (0.90, P B0.01) and acid-detergent fibre contents (R00.67, P B0.05) of some Acacia tree leaves.…”

Section: Components and Nitrogen Formssupporting

confidence: 77%

Nutritive evaluation of some native range plants and their nutritional and anti-nutritional components

Al-Masri

2013

Journal of Applied Animal Research

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Nutritive values of some native drought-tolerant range perennial shrubs (Artemisia herba-alba, Noaea mucronata, Lavandula officialis, Astragalus spinosus, Capparis spinosa) grown naturally on the south-eastern semi-desert of Syria were evaluated by determination of the in vitro digestible organic matter (IVDOM), metabolizable energy (ME) and net energy lactation (NEL) and the presence of nutritional and anti-nutritional components. The highest concentrations of crude protein and buffer soluble nitrogen (BS-N) were in C. spinosa (229 and 19 g/kg DM, respectively), whereas the lowest concentrations were in other experimental plant species (97Á104 and 6Á8 g/ kg DM, respectively). A. herba-alba had high concentrations of total phenols (TP) and hydrolysable tannins (HT; 45 and 23 g/kg DM, respectively). The range plants had low concentrations of condensed tannins (0.4Á1.1 g/kg DM). The IVDOM, ME and NEL values of the evaluated species amounted to 481Á702 g/kg DM, 6.25Á9.08 MJ/ kg DM and 3.03Á4.54 MJ/kg DM, respectively. The descending order (P B 0.05) of the plant species on the basis of their content of IVDOM, ME and NEL was C. spinosa A. spinosusL. officialis A. herba-alba N. mucronata. The addition of polyethylene glycol (PEG, 6000) to the plant samples incubated with rumen fluid at a ratio of (2:1 PEG:substrate) did not increase the values of IVDOM, ME and NEL. IVDOM, ME and NEL were negatively correlated with crude fibre and cell wall constituents but positively correlated with crude protein and BS-N. The TP and HT concentrations were negatively correlated with BS-N, but positively correlated with lignin. On the basis of protein and energy, the evaluated species were nutritionally well suited as dietary supplements for ruminants in arid regions.

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“…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 (Giraffa camelopardalis) in German zoos

Gussek¹,

Große‐Brinkhaus²,

Hummel³

et al. 2016

J. Anim. Feed Sci.

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Nutritive evaluation of some Acacia tree leaves from Kenya

Cited by 107 publications

References 27 publications

Content of phenolics and tannins in leaves and pods of some <i>Acacia</i> and <i>Dichrostachys</i> species and effects on <i>in vitro</i> digestibility

Content of phenolics and tannins in leaves and pods of some <i>Acacia</i> and <i>Dichrostachys</i> species and effects on <i>in vitro</i> digestibility

Nutritive evaluation of some native range plants and their nutritional and anti-nutritional components

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

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