เปรียบเทียบวิธี

	การย่อยได้ทั้งหมดที่ปรากฏ	การวิเคราะห์ NDF/ADF
สาขาวิชา	วิทยาศาสตร์สัตวแพทย์	วิทยาศาสตร์สัตวแพทย์
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1970	1963
ผู้ริเริ่ม	Agricultural Research Community	Peter J. Van Soest
ประเภท	Balance Study Methodology	Analytical Chemistry Method
แหล่งต้นตำรับ	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.
ชื่อเรียกอื่น	ATTD, digestibility coefficient, fecal digestibility	fiber fractionation, detergent fiber analysis, forage quality assessment
ที่เกี่ยวข้อง	3	3
สรุป	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.