Compara mètodes

	Digestibilitat Aparente Total del Tracte Digestiu	Anàlisi de la fibra detergent neutra/àcida (NDF/ADF)
Camp	Ciències veterinàries	Ciències veterinàries
Família	Process / pipeline	Process / pipeline
Any d'origen	1970	1963
Autor original	Agricultural Research Community	Peter J. Van Soest
Tipus	Balance Study Methodology	Analytical Chemistry Method
Font seminal	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.	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.
Àlies	ATTD, digestibility coefficient, fecal digestibility	fiber fractionation, detergent fiber analysis, forage quality assessment
Relacionats	3	3
Resum	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.