Phenolics, fibre and fibre digestibility in the crop residue from bird resistant and non-bird resistant sorghum varieties

The relationship between phenolics and parameters of in‐vitro digestibility of neutral‐detergent fibre (NDF) in leaves and stems from the crop residue of bird resistant (BR) and non‐bird resistant (NBR) sorghum varieties was determined. The phenolics studied were lignin, insoluble proanthocyanidins,...

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Veröffentlicht in:Journal of the science of food and agriculture 1987, Vol.39 (2), p.113-121
Hauptverfasser: Reed, J.D, Tedla, A, Kebede, Y
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creator Reed, J.D
Tedla, A
Kebede, Y
description The relationship between phenolics and parameters of in‐vitro digestibility of neutral‐detergent fibre (NDF) in leaves and stems from the crop residue of bird resistant (BR) and non‐bird resistant (NBR) sorghum varieties was determined. The phenolics studied were lignin, insoluble proanthocyanidins, soluble red pigments and soluble phenolics as measured by absorbance (280 nm)and precipitation with ytterbium. Parameters of the digestibility of NDF studied were 48‐h digestibility, potentially digestible NDF, rate of digestion and indigestible NDF as determined by non‐linear regression analysis. Leaves from BR varieties were higher in most phenolics than leaves from NBR varieties. Digestibility of NDF at 48 h, potentially digestible NDF and rate of NDF digestion was lower in leaves from BR varieties. The indigestible NDF was higher in BR varieties. Phenolics in leaves were negatively correlated with digestibility of NDF at 48 h, potentially digestible NDF and rate of NDF digestion and positively correlated with indigestible NDF. Phenolics in stems had non‐significant correlations with parameters of the digestibility of NDF except for a positive correlation between lignin and indigestible NDF. These results indicate that breeding for bird resistance in sorghum would lead to lower nutritive value of the crop residue.
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The phenolics studied were lignin, insoluble proanthocyanidins, soluble red pigments and soluble phenolics as measured by absorbance (280 nm)and precipitation with ytterbium. Parameters of the digestibility of NDF studied were 48‐h digestibility, potentially digestible NDF, rate of digestion and indigestible NDF as determined by non‐linear regression analysis. Leaves from BR varieties were higher in most phenolics than leaves from NBR varieties. Digestibility of NDF at 48 h, potentially digestible NDF and rate of NDF digestion was lower in leaves from BR varieties. The indigestible NDF was higher in BR varieties. Phenolics in leaves were negatively correlated with digestibility of NDF at 48 h, potentially digestible NDF and rate of NDF digestion and positively correlated with indigestible NDF. Phenolics in stems had non‐significant correlations with parameters of the digestibility of NDF except for a positive correlation between lignin and indigestible NDF. 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Sci. Food Agric</addtitle><description>The relationship between phenolics and parameters of in‐vitro digestibility of neutral‐detergent fibre (NDF) in leaves and stems from the crop residue of bird resistant (BR) and non‐bird resistant (NBR) sorghum varieties was determined. The phenolics studied were lignin, insoluble proanthocyanidins, soluble red pigments and soluble phenolics as measured by absorbance (280 nm)and precipitation with ytterbium. Parameters of the digestibility of NDF studied were 48‐h digestibility, potentially digestible NDF, rate of digestion and indigestible NDF as determined by non‐linear regression analysis. Leaves from BR varieties were higher in most phenolics than leaves from NBR varieties. Digestibility of NDF at 48 h, potentially digestible NDF and rate of NDF digestion was lower in leaves from BR varieties. The indigestible NDF was higher in BR varieties. Phenolics in leaves were negatively correlated with digestibility of NDF at 48 h, potentially digestible NDF and rate of NDF digestion and positively correlated with indigestible NDF. Phenolics in stems had non‐significant correlations with parameters of the digestibility of NDF except for a positive correlation between lignin and indigestible NDF. These results indicate that breeding for bird resistance in sorghum would lead to lower nutritive value of the crop residue.</description><subject>Agronomy. Soil science and plant productions</subject><subject>Biological and medical sciences</subject><subject>Cereal and baking product industries</subject><subject>crop residues</subject><subject>Cultivars: description, identification, tests, catalogs</subject><subject>dietary fiber</subject><subject>digestibility</subject><subject>Food industries</subject><subject>Fundamental and applied biological sciences. 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Sci. Food Agric</addtitle><date>1987</date><risdate>1987</risdate><volume>39</volume><issue>2</issue><spage>113</spage><epage>121</epage><pages>113-121</pages><issn>0022-5142</issn><eissn>1097-0010</eissn><coden>JSFAAE</coden><abstract>The relationship between phenolics and parameters of in‐vitro digestibility of neutral‐detergent fibre (NDF) in leaves and stems from the crop residue of bird resistant (BR) and non‐bird resistant (NBR) sorghum varieties was determined. The phenolics studied were lignin, insoluble proanthocyanidins, soluble red pigments and soluble phenolics as measured by absorbance (280 nm)and precipitation with ytterbium. Parameters of the digestibility of NDF studied were 48‐h digestibility, potentially digestible NDF, rate of digestion and indigestible NDF as determined by non‐linear regression analysis. Leaves from BR varieties were higher in most phenolics than leaves from NBR varieties. Digestibility of NDF at 48 h, potentially digestible NDF and rate of NDF digestion was lower in leaves from BR varieties. The indigestible NDF was higher in BR varieties. Phenolics in leaves were negatively correlated with digestibility of NDF at 48 h, potentially digestible NDF and rate of NDF digestion and positively correlated with indigestible NDF. Phenolics in stems had non‐significant correlations with parameters of the digestibility of NDF except for a positive correlation between lignin and indigestible NDF. These results indicate that breeding for bird resistance in sorghum would lead to lower nutritive value of the crop residue.</abstract><cop>London</cop><pub>John Wiley &amp; Sons, Ltd</pub><doi>10.1002/jsfa.2740390204</doi><tpages>9</tpages></addata></record>
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subjects Agronomy. Soil science and plant productions
Biological and medical sciences
Cereal and baking product industries
crop residues
Cultivars: description, identification, tests, catalogs
dietary fiber
digestibility
Food industries
Fundamental and applied biological sciences. Psychology
Generalities
Genetics and breeding of economic plants
in vitro
insoluble proanthocyanidins
lignin
Neutral-detergent fibre
Pest resistance
phenolic compounds
rate of digestion
Sorghum (Poaceae)
Varietal selection. Specialized plant breeding, plant breeding aims
varieties
Yield, quality, earliness, varia
title Phenolics, fibre and fibre digestibility in the crop residue from bird resistant and non-bird resistant sorghum varieties
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