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Agriculture for Secondary Schools
Parasite Host Disease/condition Control measure
caused
Stable Cattle, sheep, • Blood sucking • Prevent breeding
fly goats, pigs, • Discomfort by making manure
camels, cats, unavailable or to dry
donkeys, horses or wet for the larvae to
and human survive or kill the larvae
beings before they become
adults
• Kill adults before they
cause harm or start to
produce eggs
Louse Cattle, sheep • Loss of weight in • Dipping with dip wash
goats and poultry heavy infestation • Spraying with dip wash
• Irritation or other acaricides
• Reduce production • Hand washing
in birds • Dusting with appropriate
pesticides
Nasal Sheep and goat • Irritation • Drench with anti-
botfly • Difficult breathing parasitic drugs
• Coughing • Use of anthelmintics
Internal parasites
These are parasites that live and feed inside the animal body. They include roundworm
(Ascaris spp.), tapeworm (Taenia spp.) and flat-worm (Liver fluke- Fasciola spp.).
Figures 6.10 (a) to (d) show some common internal parasites in farm animals while
Table 6.3 gives types of internal parasites, their respective hosts and effects they
cause on the host.
Figure 6.10 (a): Round worms Figure 6.10 (b): Tape worm
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