A homework question about identifying parasites, listing infested animals, classifying parasites by phylum, naming related parasites, outlining control methods, and discussing economic importance.

Here are the answers to question 1:

a) Identify the parasites.
The parasites illustrated are roundworms (or nematodes).

$$\boxed{\text{Roundworms}}$$

b) Name four (4) farm animals that can be infested by this parasite.
Four farm animals that can be infested by roundworms are:

• Cattle
• Sheep
• Goats
• Pigs

$$\boxed{\text{Cattle, Sheep, Goats, Pigs}}$$

c) i) State the type of parasites the figure belong.
The parasites belong to the Phylum Nematoda.

$$\boxed{\text{Nematoda}}$$

c) ii) Mention any three (3) parasites that belong to the type in c(i) above.
Three parasites that are roundworms (Nematoda) are:

• Ascaris lumbricoides (human roundworm, but related species infest animals)
• Haemonchus contortus (barber pole worm)
• Oesophagostomum (nodular worm)

$$\boxed{\text{Ascaris lumbricoides, Haemonchus contortus, Oesophagostomum}}$$

d) State three (3) methods of controlling the parasites.
Three methods of controlling these parasites are:

• Regular deworming (administering anthelmintics)
• Rotational grazing (moving animals to different pastures to break the parasite life cycle)
• Proper sanitation and hygiene (e.g., cleaning animal housing, proper disposal of faeces)

$$\boxed{\text{Regular deworming, Rotational grazing, Proper sanitation and hygiene}}$$

e) State three (3) economic importance of the parasites.
Three economic impacts of these parasites are:

• Reduced growth rate and weight gain in infested animals, leading to lower market value.
• Decreased production of milk, meat, or eggs.
• Increased veterinary costs for treatment and prevention, and potential losses due to animal mortality.

$$\boxed{\text{Reduced growth rate, Decreased production, Increased veterinary costs}}$$