Crude fiber (CF)
Phát âmPhiên âm: /kruːd ˈfaɪbər/
Từ loại: Noun
Nghĩa tiếng Việt:
Xơ thô
Nghĩa tiếng Anh:
Measuring crude fiber was one part of the original system of analyzing the “digestible” fraction in feedstuffs. This method uses sequential acid and alkali extraction. It was developed by Henneberg and Sttohmann during the 1860s at the Weende Experiment Station in Germany, and is often referred to as the Weende System of proximate analysis. The CF extract was once used as a standard analysis for fibrous parts or the indigestible portion of carbohydrates in feeds. However, some of these substances are partially digestible by microorganisms in the rumen. Crude fiber accounts for most of the cellulose but only a portion of the lignin and no ash, so it underestimates true fiber and is less than acid detergent fiber (ADF). Thus, CF is not a good indicator of digestibility in ruminant animals, and the use.
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