Page 303 - Primary Five Science

5. Deworming

Deworming is the giving of drugs to an-

imals to rid them of parasites, such

as roundworm, flukes and tapeworm.

Deworming is done in two ways

1. By Drenching- this is the giving of

liquid medicine through mouth
2. By dozing – this is the giving medicine

in tablet form

6. Castration

Castration is the removal of testes from male animal.
Animals are castrated because;

1. Castrated animals grow fat and fast

2. It is done to control unwanted mating

3. It makes animals tamed and more easy to handle

4. Castrated animals do not have bad smell in their meat.

Methods of castration

1. By use of a rubber band use of a loop

2. By use of a burdizzo/closed castration

3. Open castration

(i) Closed castration

An instrument called a burdizzo is

used with great force to crush

the sperm duct.