ANSC Feeds Practice Exam 2026 - Free Practice Questions and Study Guide

The function of "ADF," or Acid Detergent Fiber, in forage quality assessment is to provide a measure of the indigestible portion of plant material. ADF consists of cellulose, lignin, and other fibrous components that are resistant to digestion by ruminants. The higher the ADF value, the lower the digestibility of the forage, which can indicate less nutritional value for the animal. Therefore, ADF helps to assess the overall quality of forages, with lower ADF levels typically associated with better digestibility and higher nutrient content.

In this context, understanding ADF is crucial for evaluating how well a forage can meet the dietary needs of livestock, particularly in terms of energy and nutrient availability. By measuring ADF, livestock producers can make informed decisions about forage types and their potential impact on animal performance.