Blog

Barber’s Pole Worm

August 17, 2020
Video
Sheep
By 
Veterinarian Expert

Understanding barber’s pole worm

This week we examine Barbers Pole worm in sheep, also known as Haemonchus contortus. It is a blood sucking worm that doesn’t cause scour. Instead, anaemia is the principle symptom observed. On farm, first report will be well-conditioned sheep suddenly going down when driven, with pale conjunctivae on inspection.

The worm gains its name from the its appearance, resembling a Barbers Pole and though it doesn’t overwinter well, it is extremely prolific – it can multiply on pasture very quickly. A good infection can involve 5000 worms which collectively could remove 250ml of blood from a sheep daily.

Adult sheep are at risk from Barbers Pole worm as well as lambs.

Oedema is a common symptom of a Haemonchus infection and so an infection can often be mistaken for chronic liver fluke.

White, yellow and clear wormers are all effective against the parasite.

Moxodex has five-weeks of persistent activity post-dosing against Haemonchus contortus.

Click to learn more about gastrointestinal worms in sheep

Understanding barber’s pole worm

This week we examine Barbers Pole worm in sheep, also known as Haemonchus contortus. It is a blood sucking worm that doesn’t cause scour. Instead, anaemia is the principle symptom observed. On farm, first report will be well-conditioned sheep suddenly going down when driven, with pale conjunctivae on inspection.

The worm gains its name from the its appearance, resembling a Barbers Pole and though it doesn’t overwinter well, it is extremely prolific – it can multiply on pasture very quickly. A good infection can involve 5000 worms which collectively could remove 250ml of blood from a sheep daily.

Adult sheep are at risk from Barbers Pole worm as well as lambs.

Oedema is a common symptom of a Haemonchus infection and so an infection can often be mistaken for chronic liver fluke.

White, yellow and clear wormers are all effective against the parasite.

Moxodex has five-weeks of persistent activity post-dosing against Haemonchus contortus.

Click to learn more about gastrointestinal worms in sheep

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