SHARING OPTIONS: Worm burdens will be increasing on grazing swards, so herd owners should be thinking about dosing animals. Outlined are five tips to get the most effective cover from wormers. / Ramona Farrelly Cattle at grass will face a growing challenge from worms, as higher temperatures will see parasite levels rapidly multiplying. Having a good worming programme in place will limit the impact parasites will have on animal performance. Delaying treatment, a poor dosing technique and using a product incorrectly will result in animals failing to gain weight and is a waste of money. It will also increase the level of anthelmintic resistance on farm.