Page 110 - Agriculture_Form_Three

Agriculture for Secondary Schools

Nutrient Function(s) Sources
Vitamins • Both groups of vitamins, that is, • Forages
fat-soluble or water-soluble, are • Oil seed cakes
required in small amounts for
healthy eyes, nasal passages, lungs, • Meat meal
blood and strong bones • Fish meal

• They are important in vision,
immune system, growth and • Blood meal
reproduction, bone growth and • Milk
strength; prevention of blood
clotting in veins and arteries and • Vitamin premixes
prevention of calcification of blood • Vitamins produced
vessels through metabolic
activities e.g.
vitamin B complex
is synthesised by
ruminal bacteria

Activity 5.1
Perform the following tasks:
1. Visit various places where livestock feeds are obtained including a nearby shop
where livestock feeds are sold, observe the feeds carefully and prepare a list of
nutrients they may supply.
2. Record your observations and present it in class.

Exercise 5.1

Answer the following questions:
1. What do you understand by the following terms?
(a) Fat-soluble vitamins
(b) Essential amino acids
(c) Non-essential amino acids

2. Mention six major groups of livestock feed nutrients.
3. For each group in question 2 above, explain briefly the functions of each nutrient
in the animal body.

The digestive systems and digestion in livestock
Before you can learn about what and how to feed your livestock, it is important to
know something about their digestive systems. This will guide you on the type of
feedstuff that your animals shall be able to eat, digest and utilise. Livestock that are
commonly kept in Tanzania may be grouped into two major categories based on
their digestive systems. These include ruminants and non-ruminants.

Student’s Book Form Twos Book Form Three
Student’
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