Salinomycin Levels For Feedlot Steers and Heifers
نویسندگان
چکیده
A new feed additive, salinomycin, was fed to 70 finishing steers (initial weight of 772lb) and 70 finishing heifers (initial weight of 4951b) for 139 and 145 days, respectively. Salinomycin was fed at 0, 5, 10, 15, and 20 g per ton of a ground corn based diet. Averaged across salinomycin levels, gain was increased 2.6 percent and efficiency of feed use was improved by 7.8 percent. Feed intake was increased slightly with the lower levels of salinomycin. At the optimum drug level in the trial, 15 g per ton of feed, gain and feed efficiency were increased by 8.9 and 10.9 percent. Carcass measurements were not changed by salinomycin feeding. This drug shows excellent promise for improving efficiency and rate of gain of both feedlot steers and heifers.
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