Effect of coumaphos and fenthion feed additives on gastrointestinal nematode egg counts in feedlot cattle.
D000818:Animals; D000871:Anthelmintics / Q000008:administration & dosage*; D002417:Cattle; D002418:Cattle Diseases / Q000188:drug therapy*; D005503:Food Additives; D007411:Intestinal Diseases, Parasitic / Q000188:drug therapy / Q000662:veterinary*; D009349:Nematode Infections / Q000188:drug therapy / Q000662:veterinary*; D013272:Stomach Diseases / Q000188:drug therapy / Q000662:veterinary*
D000871:Anthelmintics; D005503:Food Additives