The effectiveness of copper oxide powder as a component of a sustained-release multi-trace element and vitamin rumen bolus system for cattle.
Copper oxide powder administered in the form of two experimentally produced sustained-release rumen boluses significantly increased blood and liver copper concentrations in growing sheep. It was estimated that 7% of the copper released was stored in the liver. In two farm observation trials administration of two standard production boluses significantly increased blood copper concentrations in out-wintered suckler cows during late pregnancy and early lactation, and in growing cattle at grass in the summer over periods of at least 170 and 123 days, respectively.
Veterinary Animal Husbandry Department, Glasgow University Veterinary School, Bearsden, Scotland.
J J
JJ
Parkins
R G
RG
Hemingway
D C
DC
Lawson
N S
NS
Ritchie
D000818:Animals; D002417:Cattle / Q000378:metabolism*; D003300:Copper / Q000097:blood / Q000378:metabolism* / Q000493:pharmacokinetics*; D003692:Delayed-Action Preparations; D005260:Female; D008099:Liver / Q000378:metabolism; D011208:Powders; D011247:Pregnancy; D012417:Rumen; D012756:Sheep / Q000502:physiology; D014131:Trace Elements / Q000008:administration & dosage* / Q000378:metabolism; D014815:Vitamins / Q000008:administration & dosage* / Q000378:metabolism
D003692:Delayed-Action Preparations; D011208:Powders; D014131:Trace Elements; D014815:Vitamins; D003300:Copper; C030973:cupric oxide