KEY FOR QUIZ 2:
PURPOSE OF NUTRITION
Topic # 3041
Developed by Amanda R. Moore
1.
Discuss the object of nutrition.
The object of nutrition is to convert feedstuffs into desirable products
2.
Distinguish between nutrients and digestible nutrients.
A nutrient is any class of food or group of like foods that aids in the
support of life and makes it possible for animals to grow or provides
energy for physiological processes, digestible nutrients are the portion
of a nutrient which may be broken down(digested), absorbed and
used by the body
3.
List the six classes of nutrients.
Water
Carbohydrates
Fats
Minerals
Vitamins
Protein
4.
Give three(3) reasons why water is important in an animal ration.
Answers will vary by student—see power-point presentation
(nutrients and nutrient requirements) for ideas
5.
Which class of nutrients is required in only a very small amount?
Vitamins
6.
What are the functions of carbohydrates in animals?
Answers will vary by student—see power-point presentation
(nutrients and nutrient requirements) for ideas
7.
What is the difference between catabolic metabolism and anabolic metabolism?
Anabolic metabolism builds tissues, catabolic metabolism breaks
down tissues and materials
8.
What kinds of functions are considered to by “body maintenance” functions?
Body tissue repair
Control of body temperature
Energy to keep vital organs functioning
Water balance maintenance
9.
What percentage of an animal’s ration is devoted to body maintenance functions?
Approximately 50%
10.
True or False? If animal “A” weighs twice as much as animal “B”, then animal
“B” requires twice as much food as animal “A” in order to perform body
maintenance functions? (assume that both A and B are the same breed of animal)
False
11.
Choose another nutrient requirement area that we talked about in class and discuss
it below.
Answers will vary by student—see power-point presentation (nutrient
requirements for body functions) for ideas
12.
Why might shearing a sheep increase it’s energy requirements?
The wool helps to insulate the animal and when removed, it no longer
provides that heat, therefore energy requirements will increase to
sustain the animal’s body temperature.
13.
What is the main nutrient that needs to be included in a ration for a working
animal? Why?
Energy, because they are constantly depleting their energy resources
when they are doing work.
14.
True of False? Energy requirements are greater in young, growing animals than in
mature, idle animals.
True
15.
Discuss why you chose the answer that you did for question 14.
Young animals need more energy to grow, build tissue, and to
maintain their high level of activity—therefore their requirements for
energy will be more than a mature, idle animal’s