Assessment of Phenolics-Related Antinutritive Levels using theInVitro Gas Production Technique: A Comparison Between Different Types of Polyvinylpolypyrrolidone or Polyethylene Glycol

Khazaal, K.; Parissi, Z. M.; Tsiouvaras, Constantinous; Nastis, A. S.; Orskov, E R

doi:10.1002/(sici)1097-0010(199608)71:4<405::aid-jsfa584>3.0.co;2-p

Cited by 20 publications

(9 citation statements)

References 11 publications

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“…Low CP contents were previously reported in E australis 19 -22 and Cistus spp. 23,24 However, high levels of CP were recorded in young leaves of R canina and Q pyrenaica, in agreement with other studies reported in the literature. 25 -27 In some tree fodder leaves a high proportion of the protein is actually in a form available to ruminants, but in other browse species some nitrogenous compounds are incrusted in the cell wall, 28,29 and in this case the utilisation of CP by the animals may not be as high as expected.…”

Section: Discussionsupporting

confidence: 91%

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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Section: Discussionsupporting

confidence: 91%

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

et al. 2004

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“…Acacia amentacea and P. texana, which had the highest levels of CT (Table 1), obtained the highest parameters of in vitro gas production after adding PEG, supporting the results obtained in previous studies, emphasizing the affinity of PEG to neutralize tannins (Khazaal et al, 1996), and the effectiveness of the procedure to detect the presence of secondary compounds such as tannins in native species (Ammar et al, 2004).…”

Section: Chemical Compositionsupporting

confidence: 87%

“…El incremento en los parámetros de producción de gas in vitro debido de la adición de PEG, fortalece los resultados obtenidos en previas investigaciones, resaltando la afinidad del PEG para neutralizar los TC (Khazaal et al, 1996) y la efectividad de la técnica para detectar la presencia de compuestos secundarios en las plantas arbustivas, como los TC (Ammar et al, 2004).…”

Section: Chemical Compositionunclassified

INFLUENCIA DEL POLIETILÉN GLICOL SOBRE LOS PARÁMETROS DE PRODUCCIÓN DE GAS in vitro EN CUATRO FORRAJERAS NATIVAS CONSUMIDAS POR EL VENADO COLA BLANCA

Domínguez-Gómez¹,

González‐Rodríguez²,

Guerrero-Cervantes³

et al. 2011

Rev Cha Se Cie For y del Amb

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.mx ( ¶ Autor para correspondencia). RESUMENLa composición química y la fermentación in vitro se determinó en hojas tratadas con y sin polietilén glicol (PEG), de arbustivas nativas del noreste de México como: Acacia amentacea, Celtis pallida, Forestiera angustifolia y Parkinsonia texana colectadas en agostaderos manejados sin disturbio. Las colectas se realizaron en enero y abril de 2009 en tres municipios (China, Linares y Los Ramones) del estado de Nuevo león, México. La composición química y la cinética de la fermentación in vitro variaron ampliamente entre sitios, plantas y entre muestreos dentro de especies. Sólo A. amentacea (18 %) y P. texana (8 %), que tuvieron alto contenido de taninos condensados (TC), aumentaron significativamente los parámetros de producción de gas y la energía metabolizable (EM) después del tratamiento con PEG. Celtis pallida y F. angustifolia tuvieron el más bajo contenido de lignina (LDA) y TC; sin embargo, C. pallida resultó con la más alta fermentación in vitro. Lo anterior se podría explicar por diferencias entre arbustivas respecto a las características genéticas relacionadas con la actividad de los metabolitos secundarios de las plantas. Todas las plantas tuvieron alto valor nutricional para el venado cola blanca debido a que su aparato digestivo tiene mecanismos para neutralizar TC. ABSTRACTThe chemical composition and the in vitro fermentation in leaves, treated with or without polyethylene glycol (PEG), of native shrub from northeastern Mexico, such as: Acacia amentacea, Celtis pallida, Forestiera angustifolia and Parkinsonia texana were established. These shrubs were gathered from fields without any disturbance. Leaves were collected at two sampling times (January and April, 2009) in three municipalities (China, Linares and Los Ramones) of the state of Nuevo Leon, Mexico. A wide range in chemical composition and in vitro gas production kinetics was observed among sites, species and sampling times of each species. A. amentacea (CT = 18 %) and P. texana (8 %), which had a higher condensed tannins content (CT), significantly increased the in vitro gas production parameters and the metabolizable energy after a treatment with PEG. Celtis pallida had the highest in vitro fermentation parameters due to the lower levels of lignin (ADL) and CT. Some variation was observed among shrubs such as in F. angustifolia that had lower fermentation and lower ADL and CT. This discrepancy could be due to genotypic characteristics relative to the type of plant secondary compounds activity. All plants resulted with high nutritional value for white-tailed deer knowing that deer have digestive mechanisms to neutralize CT. PALABRAS CLAVE:Acacia amentacea, Celtis pallida, Forestiera angustifolia, Parkinsonia texana, composición quími-ca, fermentación ruminal.

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“…Numerous authors ( Makkar et al, 1995; McSweeny et al, 1999; Getachew et al, 2001) have shown that PEG can be added to tannin‐containing plant material in in vitro fermentation systems to demonstrate the nutritional importance of tannins on organic matter digestibility and to measure the potential nutritive value of the forage after neutralization of the tannins. The PEG has also been used to assess the effect of tannins on the extent of digestion ( in vitro gas production) of browses ( Khazaal et al, 1996). The present study demonstrates that PEG can be used to assess IVDMD of tanniniferous plants.…”

Section: Effect Of Peg On Ivdmd and The Relation With The Ct Contentsmentioning

confidence: 99%

In vitro quality assessment of two tropical shrub legumes in relation to their extractable tannins contents

Seresinhe

Iben

2003

Animal Physiology Nutrition

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The in vitro dry matter digestibility (IVDMD) of the two leguminous tree fodders Gliricidia sepium and Calliandra calothyrsus which differ in their tannin content was examined by the rumen simulation technique. Extractable condensed tannin (CT) concentrations ranged from 0.57% in G. sepium to 5.05% in C. calothyrsus using the butanol-HCl extraction. On the basis of their respective CT contents, G. sepium was classified as containing traces of CT, whereas C. calothyrsus had medium amounts of CT. Polyethylene glycol (PEG) was added at different concentrations (0, 1.5, 5 and 10 g/100 g plant material substrate) to assess the effect of tannins on IVDMD. The IVDMD was higher for G. sepium (range: 60-65%) than for C. calothyrsus (39.5-53.5%). In vitro gas production and IVDMD increased with increased PEG concentrations especially for C. calothyrsus. A non-significant response to increasing PEG concentrations for IVDMD of G. sepium confirms PEG binding with the tannins. On the basis of these results, it is assumed that G. sepium has a higher nutritive value than C. calothyrsus. Good relationship between PEG binding and the improvement of IVDMD confirms the usefulness of this technique for improving the nutritive value of tanniniferous tropical browses.

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Assessment of Phenolics-Related Antinutritive Levels using theInVitro Gas Production Technique: A Comparison Between Different Types of Polyvinylpolypyrrolidone or Polyethylene Glycol

Cited by 20 publications

References 11 publications

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

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

INFLUENCIA DEL POLIETILÉN GLICOL SOBRE LOS PARÁMETROS DE PRODUCCIÓN DE GAS in vitro EN CUATRO FORRAJERAS NATIVAS CONSUMIDAS POR EL VENADO COLA BLANCA

In vitro quality assessment of two tropical shrub legumes in relation to their extractable tannins contents

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