השוואת שיטות

	ניתוח NDF/ADF	ייצור גז במערכת העיכול של מעלי גירה במבחנה
תחום	מדע וטרינרי	מדע וטרינרי
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1963	1994
הוגה השיטה	Peter J. Van Soest	Michail K. Theodorou
סוג	Analytical Chemistry Method	Biochemical Assay
מקור מכונן	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.	Theodorou, M. K., Williams, B. A., Dhanoa, M. S., McAllan, A. B., & France, J. (1994). A simple gas production method using a pressure transducer to determine fermentation kinetics of ruminant feeds. Animal Feed Science and Technology, 48(3-4), 185-197.
כינויים	fiber fractionation, detergent fiber analysis, forage quality assessment	IVGP, gas production technique, fermentation assay
קשורות	3	3
תקציר	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.	The In Vitro Gas Production (IVGP) assay is a laboratory method that measures the fermentation kinetics of animal feeds by incubating feed samples with rumen microorganisms in controlled conditions and monitoring the volume of gas produced over time. Developed by Theodorou and colleagues in 1994, IVGP provides rapid, cost-effective estimates of feed nutritive value, digestibility, and energy availability, making it valuable for feed evaluation, diet formulation, and research on rumen fermentation dynamics.