KEY
Worksheet:
Topic: 3186C
Nutrient Needs
1.
What is a nutrient?
Any single 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.
2.
What is a digestible nutrient?
The portion of the nutrient which is broken down (digested) and absorbed for use
by the body.
3.
What are the six (seven) nutrients needed by livestock?
Protein, carbohydrates, fats, minerals, vitamins, water and air.
4.
Which nutrient is the largest single constituent of all living plants or animals tissue?
Water (over 70%)
5.
What are the functions water performs in plants and animals?
a.
hold their shape
b.
helps in the transport of nutrients to cells
c.
helps digest food
d.
controls body temperature
e.
a carrier of waste-products
f.
major part of body fluids.
6.
What are the functions of carbohydrates in animals?
a.
provide energy for body functions, growth, fattening and reproduction
b.
major supplier of food (sugars, starch, and cellulose)
c.
provider of carbon, oxygen and hydrogen
7.
What are the functions of fats in animals?
a.
a concentrated source of energy
b.
to form cholesterol, steroids (hormones) and other body compounds
c.
protection of vital organs
d.
Insulate the body
e.
provide some of the carbon, oxygen and hydrogen
8.
What are the functions of proteins in animals?
a.
help in growth and repair
b.
form the greater parts of muscles, internal organs, skin, hair, wood, feathers,
hoofs and horns
c.
provide some of the carbon, oxygen and hydrogen
9.
What are the functions of minerals in animals?
a.
make up bones and teeth
b.
important part of blood cells
c.
mineral balance helps maintain regular heartbeat
10.
What are the functions of vitamins in animals?
a.
essential for life and health
b.
defense against disease
c.
promotes growth and reproduction