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Copper Availability to Swine from Cu⁶⁴ Labelled Inorganic Compounds¹

University of Tennessee—Atomic Energy Commission Agricultural Research Laboratory, Oak Ridge, Tennessee

Abstract

Nine crossbred barrows were orally dosed with 2 millicuries of Cu⁶⁴ labelled cupric carbonate, cupric oxide, or cupric sulfate. In a second trial the same barrows received a different source of copper. There were no significant differences found in blood or plasma concentration or total fecal output of Cu⁶⁴. There was a greater (P<0.01) amount of copper carbonate excreted via the urine than of copper oxide or copper sulfate. The availabilities of the three forms of inorganic copper compounds for swine were similar.

¹ This manuscript is published with the permission of the Director of the University of Tennessee Agricultural Experiment Station, Knoxville, Tennessee. The work was completed under Contract No. AT-40-1-GEN-242 between the University of Tennessee College of Agriculture and the Atomic Energy Commission. The radioactive materials used in this work were obtained from the Oak Ridge National Laboratory on allocation from the U. S. Atomic Energy Commission.

² University of Tennessee Agricultural Experiment Station, Knoxville, Tennessee.