Cooperia and Trichostrongylus

Question 1

How large are Trichostrongylus spp worms?

Answer 1

0.5cm SMALL

4-7 mm

Question 2

What is a diagnostic feature of Trichostrongylus spp?

Answer 2

Excretory notch

Question 3

Where is Trichostrongylus axei found?

Answer 3

Abomasum of sheep

Question 4

Where is Trichostrongylus spp found?

Answer 4

SI of sheep and cattle

Question 5

What diseases do Trichostrongylus cause?

Answer 5

PGE

Black scour

Question 6

What is the life cycle of Trichostrongylus?

Answer 6

Typical trichostrongyle life cycle - L3 hypobiose

Question 7

What is the pathogenesis of Trichostrongylus?

Answer 7

L4 and L5 develop deep in mucosa and create tunnels

Question 8

What does Trichostrongylus cause?

Answer 8

Haemorrhage
Villous atrophy
Oedema
Diarrhoea

Question 9

What are the signs of Trichostrongylus?

Answer 9

Poor weight gain/weight loss
Black scour
Poor skeletal growth

Question 10

In what type of sheep is Trichostrongylus typically seen and when?

Answer 10

Store lambs

Autumn

Question 11

Where is Cooperia spp found?

Answer 11

SI of sheep

Question 12

Describe the morphology of cooperia

Answer 12

0.5-0.8cm
Coiled apperance
Cervical vesicles
Males have huge bursa and short spicules

Question 13

Is cooperia a severe parasite? What are the clinical signs?

Answer 13

No - mild

Affects weight gain

Question 14

Cooperia infections can become heavy. What would a severe cooperia infection cause (clin signs)?

Answer 14

Catarrhal enteritis
Villous atrophy
Oedema of intestinal mucosa