Effects of trace mineral supplementation, trace mineral source, growth implants, and induced morbidity on performance, trace mineral status, immune function, carcass characteristics, and lipid metabolism in steers
Steers were utilized to determine the effects of trace mineral (TM) supplementation and source, growth implants, and morbidity on performance, TM status, immune function, carcass characteristics, and lipid metabolism. In experiment 1, steers were backgrounded at their respective ranches for 30 d post weaning on one of the following treatments: 1) control (no supplemental TM), 2) inorganic TM, and 3) iso-amounts of organic TM. After the 30 d backgrounding period, steers were transported to the feedlot where half of the steers per treatment were implanted and the remaining half were not implanted. ...