Animal Science - Essential Nutrients & Functions

Multiple Choice

Which of the following best describes roughages in animal nutrition?

• Feeds high in fiber and low in energy, such as grasses and hays

• Feeds high in protein and low in fiber, such as meat and eggs

• Feeds high in fat and low in carbohydrates, such as oils

• Feeds high in sugar and low in vitamins, such as fruits

Open Ended

Why are essential nutrients important for animals' health and survival?

Open Ended

What are essential nutrients?

Multiple Choice

Which of the following are among the six classes of nutrients required by all animals?

• Proteins, carbohydrates, fats, minerals, vitamins, water

• Proteins, carbohydrates, fiber, minerals, vitamins, water

• Proteins, carbohydrates, fats, minerals, vitamins, salt

• Proteins, carbohydrates, fats, minerals, vitamins, sugar

Multiple Select

Select all the functions of water in animal bodies.

• Eliminates waste products

• Regulates blood osmotic pressure

• Provides energy directly

• Dissolves and transports nutrients

Open Ended

Why is water considered the single most important nutrient for every animal?

Multiple Choice

Which process breaks down proteins into amino acids during digestion?

• Absorption

• Evaporation

• Digestion

• Fermentation

Multiple Choice

Which of the following is a reason why proteins are required on a daily basis in animal diets?

• For maintenance, lactation, reproduction, and muscle growth

• For vitamin synthesis

• For carbohydrate storage

• For fat absorption

Open Ended

Explain the difference between essential and nonessential amino acids in animal nutrition.

Multiple Choice

Which of the following statements about protein sources is correct?

• Plant sources of protein often lack essential nutrients

• Animal sources of protein never lack essential nutrients

• Both monogastrics and ruminants can digest all the protein they consume

• Protein is only obtained from animal sources

Multiple Select

Select all statements that are true about urea in animal feed.

• Urea is a non-protein nitrogen compound used for protein production by rumen microbes

• Urea contains other useful feed components

• Urea is added to feed to help in amino acid production

• Urea is naturally found in animal sources

Open Ended

Compare and contrast animal and plant sources of protein in terms of their quality and need for supplementation.

Open Ended

Explain the difference between energy of maintenance and energy for production in animals, and give examples of activities that require each type of energy.

Multiple Choice

Which nutrient is required in the largest amount by animals and is often referred to as an energy nutrient?

• Carbohydrates

• Fats

• Proteins

• Vitamins

Multiple Select

Which of the following are functions of carbohydrates in animals?

• Provides energy for cellular respiration

• Produces chemicals that power muscles and organs

• Produces heat to keep animals warm

• Acts as a primary source of vitamins

Multiple Choice

Which type of carbohydrate is the primary source for ruminants due to its fiber content and is difficult for non-ruminants to digest?

• Simple carbohydrates

• Complex carbohydrates

• Sugars

• Starches

Multiple Choice

Which nutrient contains 2.25 times the calories of carbohydrates by weight and does not dissolve in water?

• Fats

• Proteins

• Vitamins

• Carbohydrates

Multiple Choice

Which of the following is a function of fats in animal diets?

• They are needed in large amounts for energy.

• They help absorb fat-soluble vitamins.

• They are difficult for animals to digest.

• They decrease the palatability of feed.

Multiple Select

Which of the following statements about dietary fats are correct?

• Most protein sources are also fat sources.

• Plant fats come from oils within seeds.

• Dietary fats are only found in animal products.

• Oilseeds fed to livestock include cotton seeds and soybeans.

Open Ended

Explain why mineral supplements are added to commercial animal feeds and discuss their importance.

Multiple Choice

Which of the following minerals is needed by all livestock species for proper nutrition?

• Iron

• Magnesium

• Zinc

• Copper

Multiple Select

Select all statements that correctly describe the roles of calcium and phosphorus in animals.

• They are major structural components of bones and teeth.

• They are involved in blood clotting and muscle movement.

• They regulate body pH and water balance.

• They are part of the mineral make-up of bone.

Open Ended

Summarize what you learned about essential nutrients and their sources in animal nutrition. Why are roughages important in an animal's diet?