Explanation

(a) Farm Animal hosts of Specimen O (Tick)

• Cattle
• Sheep
• Goat
• Donkey
• Horse
• Dog
• Pig
• Camel

b) Damages done by Specimen N (Liver fluke) and O (Tick)

Specimen N(Liver fluke);

• Anaemia / Loss or sucking of blood
• Blocking of bile duct
• Loss of weight / emaciation  
• May cause internal bleeding / internal haemorrhage
• Burrow into the liver / damage the liver
• Weakness of animal 
• Loss of appetite
• May lead to death
• It causes digestive problem to host

Specimen O (Tick);

• Disease transmission
• Loss of blood/ anaemia
• Body irritation / restlessness / tick worry
• Reduced quality of skin / hide
• Emaciation/loss of weight
• Wound created may lead to secondary infection

(c) Ways of controlling Specimen O (Tick)

• Quarantine
• Rotational grazing / paddocking
• Use of acaricide
• Hand picking on a small scale
• Dipping
• Burn infested pasture/ grazing land
• Spraying
• Drenching
• Proper sanitation/ changing animal bedding regularly
• Destruction of wild animals around the farm that can serve as alternate hosts

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