A Sustained-release oxytetracycline bolus for ruminants

Authors

  • Ronnie L. Byford Oklahoma Agricultural Experiment Station, Department of Entomology, Oklahoma State University, Stillwater, OK 74078
  • J. L. Riner Oklahoma Agricultural Experiment Station, Department of Entomology, Oklahoma State University, Stillwater, OK 74078
  • Jakie A. Hair Regents Professor, Oklahoma Agricultural Experiment Station, Department of Entomology, Oklahoma State University, Stillwater, OK 74078

DOI:

https://doi.org/10.21423/bovine-vol1980no15p91-94

Keywords:

Antibiotics, Application methods, drug formulations, Drug therapy, oxytetracycline

Abstract

A matrix containing a hydrophobic binder, high-density non-toxic metal derivative (barium sulphate), a polymer (polyethyleneglycol) and the active ingredient, oxytetracycline constituted the components of the bolus. When 15, 17 or 20% oxytetracycline boluses were administered to fistulated Hereford and Angus heifers weighing about 364 kg and maintained on a dry-lot maintenance ration, a mean release of 92-172 mg oxytetracycline/bolus/day over a 60-70 day period was recorded.

Author Biographies

  • Ronnie L. Byford, Oklahoma Agricultural Experiment Station, Department of Entomology, Oklahoma State University, Stillwater, OK 74078

    Graduate Student

  • J. L. Riner, Oklahoma Agricultural Experiment Station, Department of Entomology, Oklahoma State University, Stillwater, OK 74078

    Graduate Student

Cover image of the 15th Volume of the Bovine Practitioner: A photo of the two curved towers of Toronto City Hall as seen through a sculpture and immaculately manicured flowerbeds.

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Published

1980-11-01

Issue

No. 15 (1980 November)

Section

Articles

How to Cite

A Sustained-release oxytetracycline bolus for ruminants. (1980). The Bovine Practitioner, 1980(15), 91-94. https://doi.org/10.21423/bovine-vol1980no15p91-94