New weapon for lungworm
CATTLE producers were promised improved lungworm control last week with the launch of a new weapon with which to fight the disease.
The fenbendazole-based Panacur bolus, which also treats and controls gutworm, is now recommended for lungworm control. Makers Hoechst claim it is the longest lasting worming bolus available.
The companys Dr John Pearson said this would be an advantage when there was a late season lungworm challenge.
"When a bolus runs out before the end of the grazing season and lungworm larvae survive on the pasture, cattle not protected by a bolus, or those that have not developed natural immunity, risk infection."
According to Hoechst vet Liz Abbott, the Panacur bolus offers a second key benefit. When given to youngstock in their first grazing season it controls husk without damaging the animals natural lungworm immunity, she said.
"Producers need a wormer which controls lungworm, but protects calves against infection in the second grazing season."
She said trial results showed that in experimentally-infected cattle, the Panacur bolus gave similar protection against husk as the ivermectin-bolus-treated cattle.
"Our trials also confirm that when dosed in the first grazing season with the Panacur bolus, cattle develop a functional immunity to lungworm," said Dr Abbott.
• Shrewsbury veterinary investigation centre vet Graham David advises all producers to vaccinate their cattle against lungworm and adopt a compatible worm control programme.