Dairy-beef systems and grazing season At a time when anthelmintic resistance is a growing concern on Irish farms, dairy-beef farmers will be eager to get their dosing regime right. Like all young cattle, calves raised in a dairy-beef system are vulnerable to parasitic infections during their first grazing season, when natural resistance is still very low. Of particular concern are stomach worms and lungworms. Finding the right management regime during the grazing season will help to ensure thri...