Stongyloidea - cattle

Question 24

To what superfamily do Bunostomum phlebotomum belong?

Where in the GIT do they infect cattle?

Answer 24

• Strongyloidea superfamily = hookworm
• SI

Question 25

What are the route(s) of infection of Bunostomum phlebotomum?

Do these spp migrate?

Why are these parasites a problem mainly in the tropics and at the end of the dry season?

Answer 25

• LC is that of a typical hookworm (almost)
• Oral route (but no pulmonary migration here)
• Percutaneous route (pulmonary migration here)
• They need WET and warm conditions
• They enter a hypobiotic state (larvae) and resume growth at the end of the dry season

Question 26

What is the pathogenesis / are the clinical signs of Bunostomum phlebotomum infection?

Answer 26

• Several hundered adult worms needed for clinical signs (several thousand can lead to death)
• anemia (hookworm = bloodsucker)
• pedal dermatitis (foot stomping, itching)
• hypoalbuminemia
• weight loss
• diarrhea sometimes
• treatment may need to incorporate hygiene - manure disposal

Question 27

Where do Oesophagostomum radiatum parasites infect?

Being in the Strongyloidea superfamily, are these Stongyles or Hookworms?

Are these a major pathogen in cattle in the UK?

Answer 27

• LI
• Strongyles (site of infection is the LI)
• Not a major pathogen of cattle in the uk (imp in pigs though)

Question 28

Grossly, what does an Oesophagostomum radiatum infection look like in cattle?

Answer 28

• Nodules on the serosal surface of the LI