ANSC Feeds Practice Exam

Fiber plays a crucial role in animal feeds, contributing to several important physiological benefits. The correct identification of increased energy intake as not being a benefit of fiber is based on the nature of fiber itself. Fiber is primarily composed of non-digestible carbohydrates, which do not provide significant caloric energy compared to other nutrient sources like fats and carbohydrates. Instead, fiber facilitates digestive processes and serves as a substrate for fermentation by gut microorganisms, contributing to gut health and the production of short-chain fatty acids, which can be a secondary energy source.

In contrast, improved gut health is attributed to fiber's role in promoting a healthy microbiome and ensuring regular digestive function. Enhanced digestion refers to fiber's ability to regulate gut motility, aiding in the thorough digestion of other nutrients. Promotion of satiety is another important benefit, as fiber increases the bulk of the diet, helping animals feel fuller for longer periods, which can be beneficial for weight management or reducing overconsumption.

Understanding the distinction between fiber's role in providing digestive health benefits versus its limited capacity to contribute directly to energy intake is essential for efficiently formulating animal feeds.