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Neutral detergent fiber (NDF) is the most common measure of fiber used for animal feed analysis, but it does not represent a unique class of chemical compounds. NDF measures most of the structural components in plant cells (i.e. lignin, hemicellulose and cellulose), but not pectin. Further analysis can be done to the sample to determine individual components such as (ADF) analysis. The process of determining NDF content involves a neutral detergent that dissolves plant pectins, proteins, sugars and lipids. This leaves behind the fibrous parts such as cellulose, lignin and hemicellulose.

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  • Fibres insolubles dans les détergents neutres (fr)
  • Neutral detergent fiber (en)
  • Método de van Soest (pt)
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  • O método de van Soest é um protocolo analítico para determinação do de forragens. Foi desenvolvido em 1967 nos laboratórios do USDA e é rotineiramente utilizado na avaliação de forragens destinadas a ruminantes. Outras análises podem ser realizadas para determinar a contribuição para o valor nutritivo dos componentes individuais. (pt)
  • Neutral detergent fiber (NDF) is the most common measure of fiber used for animal feed analysis, but it does not represent a unique class of chemical compounds. NDF measures most of the structural components in plant cells (i.e. lignin, hemicellulose and cellulose), but not pectin. Further analysis can be done to the sample to determine individual components such as (ADF) analysis. The process of determining NDF content involves a neutral detergent that dissolves plant pectins, proteins, sugars and lipids. This leaves behind the fibrous parts such as cellulose, lignin and hemicellulose. (en)
  • Les fibres insolubles dans les détergents neutres, souvent abrégées en NDF de l'anglais, Neutral Detergent Fiber, sont une mesure d'analyse des fibres utilisée en alimentation animale. Elles ne représentent pas une classe unique de composants chimiques. Le NDF mesure la plupart des composants structuraux des cellules végétales, cellulose, hémicellulose, lignine, silice, tannins et cutines, mais pas la pectine. Cette mesure est ainsi considérée comme une estimation fiable des fibres totales présentes dans un aliment. Elle correspond à la valeur de l'ADF à laquelle on ajoute les hémicelluloses. (fr)
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  • Les fibres insolubles dans les détergents neutres, souvent abrégées en NDF de l'anglais, Neutral Detergent Fiber, sont une mesure d'analyse des fibres utilisée en alimentation animale. Elles ne représentent pas une classe unique de composants chimiques. Le NDF mesure la plupart des composants structuraux des cellules végétales, cellulose, hémicellulose, lignine, silice, tannins et cutines, mais pas la pectine. Cette mesure est ainsi considérée comme une estimation fiable des fibres totales présentes dans un aliment. Elle correspond à la valeur de l'ADF à laquelle on ajoute les hémicelluloses. Le processus de détermination du NDF comprend un détergent neutre qui dissout les pectines, les protéines, les sucres et les lipides. Il laisse de côté la partie fibreuse composée de cellulose, hémicellulose et pectine. Cette fraction n'est pas aisément digestible, elle est donc indésirable dans la ration alimentaire. Les récentes recommandations nutritionnelles pour les ruminants comprennent ainsi des limites d'apport en NDF. Le niveau de NDF dans la ration influence l'apport de matière sèche et le temps de rumination. La concentration en NDF dans un aliment est négativement corrélée avec sa concentration en énergie. (fr)
  • Neutral detergent fiber (NDF) is the most common measure of fiber used for animal feed analysis, but it does not represent a unique class of chemical compounds. NDF measures most of the structural components in plant cells (i.e. lignin, hemicellulose and cellulose), but not pectin. Further analysis can be done to the sample to determine individual components such as (ADF) analysis. The process of determining NDF content involves a neutral detergent that dissolves plant pectins, proteins, sugars and lipids. This leaves behind the fibrous parts such as cellulose, lignin and hemicellulose. Recent nutritional requirement tables for ruminants report limits for NDF intake. The level of NDF in the animal ration influences the animal's intake of dry matter and the time of rumination. The concentration of NDF in feeds is negatively correlated with energy concentration. (en)
  • O método de van Soest é um protocolo analítico para determinação do de forragens. Foi desenvolvido em 1967 nos laboratórios do USDA e é rotineiramente utilizado na avaliação de forragens destinadas a ruminantes. Outras análises podem ser realizadas para determinar a contribuição para o valor nutritivo dos componentes individuais. (pt)
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