Distomatosis

Question 1

What is it?

Answer 1

Liver fluke
Fasciola hepatica

Question 2

What species does it infect?

Answer 2

Cows
Sheep
Pigs

Question 3

Result of PMI

Answer 3

Partial rejection of liver
Category 3

Question 4

Prevention methods

Answer 4

Rotational grazing
Effective pasture drainage
Regular broad spec anthelmintics (Triclabendazole0)

Question 5

Lifecycle

Answer 5

1. Eggs passed in faces
2. Eggs hatch into miracidia on pasture
3. Miracidia infect snail and develop into cercariae in snail then released
4. Cercariae encyst on grass - metacercariae
5. Metacercariae are ingested by cattle
6. Juvenile fluke migrate through liver to bile ducts
7. Develop and lay eggs