Study Guide Topic # 3041 Basics of Nutrients and Nutrition Anna Blight What two classes make up the composition of feeds? Which of the two classes would include corn, wheat, oats, and soybean meal? What do roughages consist of? ___________________ are high in energy, low in fiber, and highly digestible. What are the six basic classes of nutrients? * * * * * * _________________ is the most important nutrient. Water helps to ___________________ other nutrients. __________________ are a major energy source. The primary energy source is _______________, with 2.25 times more energy per pound than any other source. _________________ are the only nutrient class that contain nitrogen. Proteins make amino acids, which are the ____________ ____________ of the body. Elements other than carbon, hydrogen, oxygen, and nitrogen are _________________. There are 16 known ________________ in animal nutrition. Nutrients that supply energy to the animal are ________________________. Energy is important for healthy animals because two functions run by energy are __________________________. ___________________ are any feed component that function in the support of life.