Figure 2.
Liver manganese response to implant strategy over course of study (IMP × Day, P = 0.02). Heifers received either Revalor-XH (REV-XH; 200 mg trenbolone acetate + 20 mg estradiol; Merck Animal Health; Madison, NJ) on day 0 or Revalor-200 on day 0 and again on day 91 (REV-200; 200 mg trenbolone acetate + 20 mg estradiol; Merck Animal Health). Data were analyzed as repeated measures of the mixed procedure of SAS. Unlike superscripts indicate differences between treatment means across all time points (P ≤ 0.05).