Chemical composition, in sacco degradation and in vitro gas production of some Ghanaian browse plants

Apori, Samuel Obeng; Castro, Fernando Basile de; Shand, W. J.; Ørskov, E. R.

doi:10.1016/s0377-8401(98)00205-3

Cited by 35 publications

(25 citation statements)

References 15 publications

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“…The foliage of C. mopane exhibited higher ADL concentrations than that of the Combretum species. Ghanaian browse plants (Apori et al, 1998) and multipurpose fodder trees and shrubs in the humid tropics (Larbi et al, 1998) contained NDF and ADL levels in ranges similar to those observed in the present study. In general, the browse species analysed in this study and in the reported investigations had lower levels of NDF than a large variety of grass species quoted by Meissner & Paulsmeier (1995), while ADF and ADL concentrations were within the same range of the grass species.…”

Section: Discussionsupporting

confidence: 84%

“…This is towards the lower range of protein concentrations reported for the foliage of browse plant species (Rittner & Reed, 1992;Apori et al, 1998;Larbi et al, 1998;Sawe et al, 1998;El hassan et al, 2000), especially lower than the CP levels in legume fodder trees and shrubs (Topps, 1992). In the present study, the CP levels of C. apiculatum leaves were similar to those measured by Groenewald et al (1967), Sauer (1983) and Balogun et al (1998).…”

Section: Discussionsupporting

confidence: 83%

“…The rumen DM degradation estimates of the species in this study were within the range of those of various forage plants evaluated by Kamatali et al (1992) and Balogun et al (1998). Khazaal et al (1994) and Apori et al (1998) pointed out that the in situ technique should be used with caution when estimating the nutritive value of feeds containing high levels of phenolics because the potential negative effect of phenolic compounds on rumen microbial fermentation is unlikely to be detected by in situ methods. In vitro methods such as IVDOM and gas production measurements are more reliable in detecting inhibitory compounds in feeds because these compounds are likely to affect the activity of rumen microbes in a closed system (Khazaal et al, 1994;Balogun et al, 1998;El hassan et al, 2000).…”

Section: Discussionsupporting

confidence: 66%

“…could have contributed to these differences. Ghanaian browse plants (presumably nonleguminous) had CP levels of 180 and 260 g/kg (Apori et al, 1998). Larbi et al (1998) reported similar higher levels of CP in fodder trees and shrubs in the humid tropics, and El hassan et al (2000) in multipurpose leguminous trees, than in the present study.…”

Section: Discussionsupporting

confidence: 66%

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The chemical composition and potential nutritive value of the foliage of four subtropical tree species in southern Africa for ruminants

Lukhele¹,

Ryssen²

2003

SA J. An. Sci.

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The foliage of three Combretum species, C. apiculatum, C. molle and C. zeyheri, as well as that of Colophospermum mopane was collected over a period of two years. The chemical composition, in vitro organic matter digestibility (IVOMD) and the rumen degradability of dry matter (DM) and nitrogen (N) were determined on these samples. Mean values for crude protein (CP) concentration varied from 92 g/kg DM for C. molle to 141 mg/kg DM for C. mopane, the neutral detergent fibre concentration from 323 g/kg DM for C. apiculatum to 392 g/kg DM for C. molle and that of acid detergent fibre from 247 g/kg DM for C. apiculatum to 355 g/kg DM for C. molle. The calcium (Ca) concentration in the foliage was high (8-16 g/kg DM) compared to the phosphorus (P) concentrations of between 0.8-2.1 g/kg DM, resulting in an average Ca : P ratio of 9.3 : 1. The foliage contained relatively low levels of sodium (Na), 0.041 g/kg DM, based on beef cattle standards. The IVOMD ranged from 53% for C. mopane to 64% C. apiculatum and the rumen degradability of DM from 78% for C. molle to 94% for C. apiculatum. The DM degradability was substantially higher than that of nitrogen, which varied between 47% for C. apiculatum and 60% for C. zeyheri. It was concluded that the foliage tested would not be suitable sources of N to supplement protein deficiencies in low quality herbage. Furthermore, browsers would require additional sources of P and Na to avoid deficiencies in these elements.

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Section: Discussionsupporting

confidence: 84%

Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 66%

Section: Discussionsupporting

confidence: 66%

See 2 more Smart Citations

The chemical composition and potential nutritive value of the foliage of four subtropical tree species in southern Africa for ruminants

Lukhele¹,

Ryssen²

2003

SA J. An. Sci.

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“…Any anti-nutritive compound is likely to affect the activity of the rumen microbes. On the other hand, the in situ method is associated with a dilution effect which results from an open system with a wider rumen environment and copious supply of rumen fluid to nylon bag content (Apori et al, 1998). This is why the DM disappearance and some estimated parameters showed a positive correlation with SCT in this experiment (Table 5).…”

Section: Discussionmentioning

confidence: 82%

Comparison between in situ dry matter degradation and in vitro gas production of tannin-containing leaves from four tree species

Kamalak

Canbolat²,

Gürbüz³

2006

SA J. An. Sci.

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Dry matter (DM) degradation of Glycrrhiza glabra L, Arbutus andrachne, Juniperus communis, and Pistica lentiscus was determined using two different techniques: (i) the in vitro gas production and (ii) the in situ nylon bag degradability technique. Samples were incubated in situ and in vitro for 3, 6, 12, 24, 48, 72 and 96 h. In situ and in vitro DM degradation kinetics were described using the equation y = a + b (1 -e ct ). At all incubation times except 3 and 72 h the cumulative gas production of J. communis was significantly lower than that of G. glabra, A. andrachne and P. lentiscus. At 3, 6 and 12 h incubation times the DM disappearance of J. communis was only significantly lower than that of P. lentiscus. At 24 and 48 h incubation times DM disappearance of J. communis was significantly lower than that of A. andrachne and P. lentiscus. There were significant relationships between in vitro gas production and in situ DM disappearance at 24 h and 96 h incubation times. The gas productions at 24 and 96 h incubation explained 51.2 and 52.4% of variation of DM disappearance, respectively. Gas production from the insoluble fraction (b) alone explained 66.4% of the variation of effective DM degradability (EDMD). The inclusion of gas production from quickly soluble fraction (a) and rate constant (c) of gas production in the regression equation did not improve the accuracy of predicting EDMD. It was concluded that in situ DM disappearance parameters of tannin-containing tree leaves such as used in this present study may be predicted from in vitro gas production parameters. _______________________________________________________________________________________

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Chemical composition and in vitro digestibility of some Spanish browse plant species

et al. 2004

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Samples of leaves, flowers and fruits of four browse species were collected from uplands in the province of León (northwestern Spain) at different sampling times (from spring till autumn). The browse species were Erica australis (Spanish heath), Cistus laurifolius (laurel-leaved rock rose), Quercus pyrenaica (hoary oak) and Rosa canina (wild dog rose). A large variability in chemical composition and in vitro digestibility and gas production kinetics was observed among species and among sampling times within each species. The ranking order of the browse plants according to their in vitro digestibility and gas production kinetics was R canina > Q pyrenaica > C laurifolius > E australis. In the leaves of R canina and Q pyrenaica, crude protein content, digestibility and parameters of gas production tended to decrease throughout the growing season (P < 0.05 in most cases), whereas cell wall contents followed the opposite trend. Seasonal variations were less pronounced in the other browse species. There were significant (P < 0.05) correlations between in vitro digestibility and chemical composition of the browse plants, positive with the crude protein content and negative with the fibre fractions.

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Chemical composition, in sacco degradation and in vitro gas production of some Ghanaian browse plants

Cited by 35 publications

References 15 publications

The chemical composition and potential nutritive value of the foliage of four subtropical tree species in southern Africa for ruminants

The chemical composition and potential nutritive value of the foliage of four subtropical tree species in southern Africa for ruminants

Comparison between in situ dry matter degradation and in vitro gas production of tannin-containing leaves from four tree species

Chemical composition and in vitro digestibility of some Spanish browse plant species

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