Page 173 - Agriculture_Form_Three

Agriculture for Secondary Schools

(c) It provides a tool to study the behaviour of characteristics in hereditary
transmission.

(d) The system results in genetic improvement.

Disadvantages of mating unrelated animals
(a) Crossbreeding requires maintenance of two or more pure breeds in order to
produce true crossbreeds.

(b) Loss of uniformity of the herd as offsprings inherit genes from different parents’
lines.

Activity 7.5
1. In groups, using the knowledge developed in breeding and breeding systems,
discuss which breeding methods and breeding systems can best suit in improving
performance of animals in your farming settings.
2. Visit a nearby dairy farm and collect data of the last four years on breeding

systems used. Using the data collected, decide which breeding methods would
you recommend to continue using in that farm.

Activity 7.6
Write a summary of what you have learnt from this chapter in your portfolio.

Exercise 7.2

1. What is the importance of breeding in farm animals?
2. Briefly, explain inbreeding in farm animals.
3. What are the advantages of crossbreeding? Give examples.

4. Outline any 3 disadvantages of upgrading breeding system in livestock.
5. Briefly, explain selection as a tool of livestock improvement.

Student’s Book Form Three
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AGRICULTURE FORM 3 9.11.2022.indd 162 10/01/2025 12:31