Lungworm immunity could be developed without vaccine
"One option taken by some farmers already is season-long protection from a single long acting moxidectin treatment," he says.
"The active ingredient is distributed through the bloodstream, so worm larvae need to penetrate the gut wall, thereby stimulating an immune response, before being exposed to the wormer and killed."
Another option, according to Mr Montgomery, is the Autoworm First Grazer pulse-release oxfendazole bolus. At three-week intervals, a dose of wormer is released, killing all the common worms, including lungworm, that cattle may be carrying.
The active ingredient has no residual action so cattle are exposed to worm challenge during each 21 day interval between wormer pulses, thereby stimulating an immune response.
Cattle not yet treated with either pulse-release bolus or long acting wormer can also still be protected throughout the grazing season with a strategic 0.5% moxidectin pour-on regime.
“This treatment offers protection against gastrointestinal worms and lungworm with an eight to 10 week dosing interval," the Zoetis vet explains.
"So one treatment now, another in about two months time, then one up to five weeks pre-housing can provide a worm control protocol for the entire grazing season.
"As well as immunity generated by larvae penetrating the gut wall before being exposed to wormer carried in the blood, the intervals between treatments allow additional exposure to worm larvae for further stimulation of immunity. But before this causes disease, the next treatment kills the larvae."
No comments posted yet. Be the first to post a comment
Please enter your name
Please enter your comment
Your comment submitted successfully.Please wait for admin approval.
Some error on your process.Please try one more time.
Butchers in the UK are losing a generation through lack of training opportu...
NASA research has revealed how dust blown from the Sahara desert helps supp...
“In the run up to the Budget 2015 most commentators were predicting that th...
The UK’s first fully operational floating solar panel system has been unvei...
Axing the badger cull in England and Wales will save more than £120 million...
By 2025, solar power could become one of the cheapest forms of energy in ma...
Demand for Scottish farm land remains strong and continues to be better val...
The Welsh red meat industry should aim to increase sales by at least 34 per...
Fears about the impact that a proposed transatlantic trade agreement could ...