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

How to Cite

Byford, R. L., Riner, J. L., & Hair, J. A. (1980). A Sustained-release oxytetracycline bolus for ruminants. The Bovine Practitioner, 1980(15), 91–94. https://doi.org/10.21423/bovine-vol1980no15p91-94

Issue

No. 15 (1980 November)

Section

Articles