TEST OF PRACTICAL KNOWLEDGE QUESTION (a) List three stages in the life cycle of specimen G (Liver Fluke) (b) State four effects of specimen G on the farm an...

Answer Details

a) The three stages in the life cycle of Liver Fluke (specimen G) are:

1. Egg stage: The adult Liver Fluke lays eggs which are then passed out with the animal's feces.
2. Miracidium stage: The eggs hatch into a free-swimming larval form called the miracidium, which then infects a snail.
3. Cercaria stage: The miracidium develops into a cercaria, which is then released from the snail and can infect a farm animal by penetrating its skin.

b) Four effects of Liver Fluke (specimen G) on farm animals are:

1. Reduced productivity: Liver Fluke infections can cause weight loss, reduced milk yield, and reduced fertility in farm animals.
2. Liver damage: As the name suggests, Liver Fluke infections can cause significant damage to the liver, including cirrhosis, fibrosis, and inflammation.
3. Anemia: In severe cases, Liver Fluke infections can cause anemia, which is characterized by pale mucous membranes and lethargy.
4. Death: In extreme cases, Liver Fluke infections can be fatal to farm animals.

c) Three ways of controlling Liver Fluke (specimen G) on farm animals are:

1. Pasture management: Keeping pastures well-drained and avoiding over-grazing can help reduce the snail populations that serve as intermediate hosts for Liver Fluke.
2. Chemical treatment: Various anthelmintic drugs can be used to treat and prevent Liver Fluke infections in farm animals.
3. Vaccination: There are also vaccines available that can help protect farm animals against Liver Fluke infections.

d) S