Masters Theses

Author

Milton W. Orr

Date of Award

8-1984

Degree Type

Thesis

Degree Name

Master of Science

Major

Animal Science

Major Professor

B.R. Bell

Committee Members

Robert Walker, Fred Hopkins, M.J. Montgomery

Abstract

The distribution of Penicillin G Potassium administered intramammarily (IMM) and intravenously (IV) and the effects Dimethyl sulfoxide (DMSO) has on this distribution was investigated. In this study, cows were divided into four treatment groups. Cows in treatment group one were given penicillin in the right front quarter while cows in treatment group two were given penicillin plus DMSO in the right front quarter. Cows in treatment group three were given penicillin IV and cows in treatment group four were given penicillin plus DMSO IV. Data were obtained from analysis of milk and serum samples collected at 0, 30, 60, 90, 120, 240, 360, and 480 minutes following treatment. Differences in concentration of penicillin in serum and in milk from each quarter were the primary measurement responses.

The use of DMSO with IMM treatments did not significantly affect the concentration of penicillin in the milk. However, when DMSO was added with the IV administration of penicillin, there was a faster rate of removal of penicillin from the serum with a slight increase in penicillin in the milk samples. This increase in milk levels of penicillin was not highly significant. Since in each treatment group involving the use of DMSO increases in concentration of penicillin in milk were slight, it would be difficult to advise the use of DMSO in clinical treatment of mastitis until additional data is available.

Files over 3MB may be slow to open. For best results, right-click and select "save as..."

Share

COinS