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.
Parkins
J J
JJ
Veterinary Animal Husbandry Department, Glasgow University Veterinary School, Bearsden, Scotland.
Hemingway
R G
RG
Lawson
D C
DC
Ritchie
N S
NS
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