Prep for Parasites Before the Feedlot
Heather Smith Thomas
Angus Beef Bulletin
Research shows advantage of deworming calves ahead of feedlot entrance. Cattle on pasture pick up parasites. Worm level in any group of cattle depends on how heavily contaminated the pasture is and whether the cattle have natural resistance to nematode infections. Calves have not yet developed much resistance and tend to have heavy parasite loads if pastures are contaminated.