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| Привидна обща смилаемост на храносмилателния тракт× | Анализ на НДФ/АДФ× | |
|---|---|---|
| Област | Ветеринарни науки | Ветеринарни науки |
| Семейство | Process / pipeline | Process / pipeline |
| Година на възникване≠ | 1970 | 1963 |
| Създател≠ | Agricultural Research Community | Peter J. Van Soest |
| Тип≠ | Balance Study Methodology | Analytical Chemistry Method |
| Основополагащ източник≠ | Adeola, O. (2001). Digestion and balance techniques in pigs. In A. J. Lewis & L. L. Southern (Eds.), Swine Nutrition (2nd ed., pp. 903-916). CRC Press. link ↗ | Van Soest, P. J., & Wine, R. H. (1967). Use of detergents in the analysis of fibrous feeds: II. A rapid method for the determination of fiber and lignin. Journal of the Association of Official Analytical Chemists, 50(1), 50-55. link ↗ |
| Други названия | ATTD, digestibility coefficient, fecal digestibility | fiber fractionation, detergent fiber analysis, forage quality assessment |
| Свързани | 3 | 3 |
| Резюме≠ | Apparent Total Tract Digestibility (ATTD) is a measure of the proportion of a nutrient consumed in feed that is absorbed by the animal, calculated from the difference between dietary intake and fecal excretion. Standardized since the 1970s, ATTD is essential for quantifying the bioavailability of nutrients in feedstuffs, formulating balanced diets, and comparing the nutritive value of different feed ingredients across diverse animal species. | Neutral Detergent Fiber (NDF) and Acid Detergent Fiber (ADF) analysis is a chemical fractionation method that separates feed components into digestible and indigestible portions based on their resistance to sequential detergent treatments. Developed by Peter J. Van Soest in the 1960s, NDF/ADF analysis provides rapid estimates of forage quality and feed digestibility, making it fundamental to ruminant nutrition and feed evaluation worldwide. |
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