STD 7 SCIENCE LESSON TERM 11

TOPIC : ANIMALS

SUB-TOPIC : CONTROL OF LIVESTOCK PARASITES

Look at the pictures above.
1. What do you think the animals are doing in picture 1?
2. What is the man in picture 2 doing?

The following are methods of controlling parasites.
1. Dipping.
This is a method of taking animals to a cattle dip. Treated water is filled in a dip and animals swim through the dip to kill ticks or any other external parasite. Dipping can be seen in picture 1 above.

2. Spraying
This can be done at home. Treated water is put in a spraying can and animals are sprayed as seen in picture 2.

3. Rotational Grazing.
This is grazing animals by shifting them from one area to another after a certain period. In doing this if an area is infected with parasites, the animals are shifted and the parasites left in an area would die over time.

4. Deworming.
This is treating animals by either giving oral drugs or injecting them with deworming drugs.


SUB-TOPIC : HUMAN INTESTINAL WORMS.

This a picture of some internal human parasites. These parasites stay inside the body of a human being attaching themselves in different places.
In your science Text Book, check on this subtopic and read through human internal questions.

ANSWER THESE QUESTIONS.

1. In which method can one control livestock parasites without directly poisoning them?

2. Which method of parasite control is more appropriate for communal control?

3. Giving the animals drugs so as to kill parasites is __

4. Which one of these items is the LEAST important when preparing for spraying.

5. The most effective way of tick control is treatment after ___

6. Rotational grazing is most effective in ___

7. Which one of the following is not an internal human parasite?

8. Intestinal parasites attach themselves in the____

9. Human beings can control internal parasites by ___