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Effect of injectable vitamin C (VC) treatment on plasma cortisol concentration of early-weaned (65 ± 11 d of age) beef steers. Treatments were applied at weaning on day 0 including intramuscular injections (20 mL per steer) of VC (250-mg sodium ascorbate per mL; 5 g per steer) or saline (SAL; 20 mL per steer). Day 0 plasma cortisol concentration was used as a covariate in day 1 analysis but was not different between treatments (P = 0.40). N = 24 steers per treatment.
