Efficacy of Copper Oxide Needles in Preventing Copper Deficiency in Cattle
DOI:
https://doi.org/10.21423/aabppro19985779Keywords:
copper oxide needles, grazing period, copper deficiency, calves, replacement heifers, salt supplementation, copper glycinate injectionAbstract
The purpose of this study was to evaluate the hypothesis that a single dose of copper oxide needles administered to cattle at the beginning of the grazing period would sustain plasma copper concentrations and prevent growth depression associated with copper deficiency for the duration of the grazing period. Comparisons of efficacy were made against the traditional treatment methods of copper glycinate injection and copper supplementation in salt in two trials involving age groups most at risk for clinical copper deficiency calves and replacement heifers. High pasture molybdenum concentrations with Cu:Mo ratios below 5:1 were present at both trial locations.
