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

@article{Baxa2010AdditiveEO,
  title={Additive effects of a steroidal implant and zilpaterol hydrochloride on feedlot performance, carcass characteristics, and skeletal muscle messenger ribonucleic acid abundance in finishing steers.},
  author={T. J. Baxa and John Paul Hutcheson and Mark F. Miller and J. Chance Brooks and Wade Taylor Nichols and Marshall N. Streeter and David A. Yates and B J Johnson},
  journal={Journal of animal science},
  year={2010},
  volume={88 1},
  pages={330-7}
}
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-17beta) on finishing steer performance and the mRNA concentration of beta-adrenergic receptors (beta-AR) types I and II, and types I, IIA, and IIX myosin heavy chain (MHC) isoforms. A total of 2,279 feedlot steers weighing 426 +/- 6.4 kg were administered no implant or RS on d 0, and fed 0 or 8.3 mg of ZH/kg of diet DM during the… CONTINUE READING