2004 journal article
Bioavailability of copper from tribasic copper chloride and copper sulfate in growing cattle
Animal Feed Science and Technology, 116(02-Jan), 13-.
By: J. Spears, E. Kegley & L. Mullis
2003 journal article
Effects of breed (Angus vs Simmental) and copper and zinc source on mineral status of steers fed high dietary iron
Journal of Animal Science, 81(1), 318–322.
By: L. Mullis, J. Spears & R. McCraw
Estimated copper requirements of Angus and Simmental heifers
Journal of Animal Science, 81(4), 865–873.
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