ANSC Feeds Practice Exam

Which of the following feedstuffs are classified as carbonaceous concentrates?

1. Wheat

2. Corn

3. Alfalfa

4. Barley

The correct answer is: Corn

Carbonaceous concentrates are feedstuffs that are high in energy and low in fiber, primarily composed of carbohydrates, particularly starch. These feeds are typically rich in energy and used as a primary source of energy in livestock diets. Corn is classified as a carbonaceous concentrate because it is a staple grain that is very high in starch content, providing a significant amount of energy while being low in fiber. It is often used in animal diets due to its high digestibility and energy content, making it ideal for energy needs. Wheat and barley, while also energy sources, may contain more fiber and protein compared to corn, which can influence their classifications. Alfalfa, on the other hand, is a legume forage known for its high fiber and protein content, classifying it more as a protein supplement rather than a carbonaceous concentrate. Thus, corn stands out among the options as the quintessential carbonaceous concentrate due to its specific high-energy, low-fiber characteristics, suitable for enhancing energy intake in livestock production.