Page 154 - Agriculture_Form_Three

Agriculture for Secondary Schools

Parasite Host Disease/condition caused Control measure
Schisto- Cattle, goats, Schistosomiasis • Supply of clean
soma sheep water
• Use of
anthelmintics
• Destruction
of snails by
chemicals and
biological
methods

General symptoms of infestation of internal parasites

(a) General loss of body weight and condition
(b) Distended belly

(c) Facial oedematous especially swelling of the lower jaws
(d) Loss of appetite or excessive appetite
(e) Rough hair coat

(f) Dehydration and pale mucus membrane

(g) Dullness
(h) Reduction in production
(i) Recumbency followed by death

Control measures of internal parasites in livestock
Control measures of internal parasites in livestock require a range of practices which

involve biological, cultural and chemical methods. The methods involved in control
of parasites include:
(a) Regular deworming
(b) Proper sanitation in livestock houses
(c) Eradication of intermediate hosts
(d) Draining or spraying swampy areas with appropriate chemicals like copper
sulphate to kill vectors

(e) Ploughing pasture land to kill eggs
(f) Practicing rotational grazing to break life cycle of the vectors
(g) Use of latrines to avoid contact with human excreta so as to control intestinal
worms such as tapeworm and round worm

Student’
Student’s Book Form Twos Book Form Three
143

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AGRICULTURE FORM 3 9.11.2022.indd 143 10/01/2025 12:31