title: Copper and selenium deficiency in cattle: an evaluation of methods of oral therapy and an observation of a copper-selenium interaction.
abstract: The efficacies of oxidised copper particles, selenium bullets and soluble glass bullets in raising the copper and/or selenium reserves of young cattle marginally deficient in both trace elements were examined. Selenium bullets were associated with a reduced copper uptake when selenium bullets and oxidised copper particles were given together. Responses in liveweight gains to trace-element supplementation and relationships between copper or selenium in blood components and liver are presented.
mesh_terms: D000284:Administration, Oral; D000821:Animal Feed / Q000032:analysis; D000818:Animals; D001835:Body Weight; D002417:Cattle; D002418:Cattle Diseases / Q000188:drug therapy*; D003300:Copper / Q000008:administration & dosage / Q000032:analysis / Q000172:deficiency* / Q000627:therapeutic use; D004347:Drug Interactions; D005243:Feces / Q000032:analysis; D005260:Female; D007501:Iron / Q000032:analysis; D008099:Liver / Q000032:analysis; D008297:Male; D012643:Selenium / Q000008:administration & dosage / Q000032:analysis / Q000172:deficiency* / Q000627:therapeutic use
chemical_list: D003300:Copper; D007501:Iron; D012643:Selenium