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Effects of duration of zilpaterol hydrochloride and days on the finishing diet on carcass cutability, composition, tenderness, and skeletal muscle gene expression in feedlot steers

Rathmann, R.J.; Mehaffey, J.M.; Baxa, T.J.; Nichols, W.T.; Yates, D.A.; Hutcheson, J.P.; Brooks, J.C.; Johnson, Bradley J.; Miller, M.F. (2009)

Preselected carcasses (n = 112) from feedlot steers fed zilpaterol hydrochloride (ZH; 8.33 mg/kg, DM basis) in a serial slaughter experiment were evaluated to determine the effects of ZH upon carcass cutability, composition, ...

Additive effects of a steroidal implant and zilpaterol hydrochloride on feedlot performance, carcass characteristics, and skeletal muscle messenger ribonucleic acid abundance in finishing steers

Baxa, T.J.; Hutcheson, J.P.; Miller, M.F.; Brooks, J.C.; Nichols, W.T.; Streeter, M.N.; Yates, D.A.; Johnson, Bradley J. (2010)

This experiment investigated the effects of zilpaterol hydrochloride (ZH) and the steroidal implant Revalor-S (RS; 120 mg of trenbolone acetate and 24 mg of estradiol-17β) on finishing steer performance and the mRNA ...