Lungworm on rise
LUNGWORM cases in adult cattle have increased due to the fall in vaccinations to a quarter of the levels seen 10 years ago.
That is the warning of Graham David of the Veterinary Investigation Centre, Shrewsbury, Shropshire. He claims vaccinations were at 1m a year in the 80s but are now nearer a 0.25m. In the same period outbreaks of lungworm increased mainly in adult dairy cattle. Cases investigated by the VI services rose from 50 in 1990 to 200 in 1994.
"The advent of powerful worming programmes has led producers to believe that the products control everything, including lungworm," he says. "But animals need to develop immunity to lungworm, for which vaccination is the only reliable method."
Lungworm vaccines must be given in two doses, three weeks apart, with the final dose two weeks before turnout. He advises producers to seek vet advice. *