Differences Between an Acid Detergent Fiber & a Neutral Detergent Fiber By Michael E Carpenter; Updated April 24, 2017 Acid detergent fibers and neutral detergent fibers are important measurements used in forage food consumed by animals.
Neutral Detergent Fiber (NDF) is the most common measure of fiber used for animal feed analysis, but it does not represent a unique class of chemical compounds. NDF measures most of the structural components in plant cells (i.e. lignin, hemicellulose and cellulose), but not pectin. Further analysis can be done to the sample to determine individual components such as ADF analysis.
The levels of ADF and NDF are critical because they impact animal productivity and digestion. This primer on Acid Detergent Fiber & Neutral Detergent Fiber will help you understand the importance of these components and how percentages vary depending on maturity of the plant. What are ADF and NDF in forages?
Two important components regulate forage quality: fiber [acid detergent fiber (ADF) and neutral detergent fiber (NDF)] and crude protein (CP). Both are related to the age or stage of development of the crop. For example, as the crop ages, fiber increases and protein decreases (on a dry-matter basis).
Fiber. Crude Fiber (CF): Crude fiber is a traditional measure of fiber content in feeds. Neutral detergent fiber (NDF) and acid detergent fiber (ADF) are more useful measures of feeding value, and should be used to evaluate forages and formulate rations. Neutral Detergent Fiber (NDF): Structural components of the plant, specifically cell wall ...
In recent years, commercial forage testing laboratories have begun to evaluate the neutral detergent fiber digestibility (NDFD) as well as NDF with acid detergent fiber (ADF). Although ADF and NDF are good indicators of fiber contents in forages, they do not measure how digestible that fiber is.
Neutral Detergent Fiber (NDF) 1. Application This procedure is applicable for the determination of neutral detergent fiber in all types of forages and feeds. 2. Summary of Methods A neutral detergent solution is used to dissolve the easily digested pectins and plant cell
neutral-detergent fiber2 (NDF) a measure of fiber after digestion in a non-acidic, non-alkaline detergent as an aid in determining quality of forages. Contains the fibers in acid-detergent fiber, plus hemicellulose.
Impacts This is the first year of the project, but in this year we have made significant progress in updating methods for fiber evaluation. To date the findings have resulted in the updates of two methods, how we measure lignin in forages and how we measure neutral detergent fiber digestibility. Publications
Fibre test results can be determined for Acid Detergent Fiber, Neutral Detergent Fiber, and Crude Fiber for all feeds and forages. The ANKOM 2000 is accurate and precise when compared to conventional fibre methods. Most elements of technician variability are eliminated and there is no separate filtration step, so consistent results are achieved ...