ANSC Feeds Practice Exam

Which of the following feedstuffs is NOT classified as a carbonaceous concentrate?

1. Corn gluten meal

2. Corn grain

3. Barley straw

4. Animal tallow

The correct answer is: Corn gluten meal

The correct answer is corn gluten meal, which is not classified as a carbonaceous concentrate because it is primarily a by-product of corn processing and is rich in protein. Carbonaceous concentrates are typically low-protein feeds that are high in energy, primarily derived from carbohydrate sources such as grains and other energy-dense materials. In contrast, corn grain and animal tallow fall squarely into the category of carbonaceous concentrates. Corn grain is a primary energy source that is high in starch, while animal tallow is a fat source that provides concentrated energy. Barley straw, while a feeding option, is a fibrous by-product and is not typically classified in the same manner as carbonaceous concentrates which focus on energy-rich, low-protein feeds. Thus, corn gluten meal stands out for its higher protein content, making it unsuitable for classification as a carbonaceous concentrate.