Herbs effective against round worms in pigs
The use of plant extracts can prevent large round worm (Ascaris
suum ) infections in pigs, according to research from the
Dutch Animal Sciences Group (ASG). Ecological pig producers, who often don't
use conventional anti worm treatment, are particularly the ones who benefit from
A mixture of thyme, lemon balm and purple coneflower at a 5% inclusion rate
in the feed of pigs resulted in a good prevention against the round worms.
However, a dosage of 5% is economically not feasible. ASG therefore investigates
whether the dosage can be lowered and if the addition of black tea may improve
the efficacy of the herb mixture. Black tea is rich in tannins, which is assumed
to limit the amount of worm eggs produced. The tea also disrupts the ability of
worms to attach to the intestinal mucosa layer.
ASG is currently running trials with individual housed
fattening pigs that have been challenged with a worm infection. Some animals
receive the herb mixture with 1% thyme, lemon balm and purple coneflower in the
feed. Some animals receive the same mixture, added with 1% black tea. Both
groups will be compared with control animals and animals that received
Flubendazole at day 42 after infection.
Round worms are a significant problem in ecological pig
farming systems. The aim is to control the infections by natural extracts. The
results from the trials by ASG will be published mid 2007.
Dossier AllAbout plant extracts
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