(a) State four ways of controlling specimen G (Rat) on an animal farm. (b) State four effects of specimen H (Tick) on cattle. (c) Mention three other organi...

(a) Four ways of controlling specimen G (rat) on an animal farm

• Use of traps to catch and destroy them.
• Use of rodenticides/poisons.
• Good farm sanitation to remove food and hiding places.
• Storage of feed in covered, rat-proof containers and blocking of openings in walls and floors (predators such as cats also help).

(b) Four effects of specimen H (tick) on cattle

• They suck blood, causing anaemia and loss of condition.
• They are vectors of diseases such as babesiosis, anaplasmosis, theileriosis and heartwater.
• Their bites cause wounds that lead to secondary infection.
• They cause irritation and restlessness and damage the hide/skin, reducing productivity.

(c) Three other organisms with similar effects as specimen H (tick)

• Lice
• Mites/keds
• Fleas (also larvae of houseflies/blowflies)

(d) Four ways of controlling specimen H (tick)

• Application of acaricides/pesticides by dipping, spraying, dusting or pour-on.
• Hand-picking and destroying the ticks from the animal's body.
• Rotational grazing/paddocking and burning of infested pasture.
• Good farm hygiene with isolation/quarantine of infested animals.