Bovine Tuberculosis Screening
by Paul Avis/science Photo Library
Title
Bovine Tuberculosis Screening
Artist
Paul Avis/science Photo Library
Medium
Photograph - Photograph
Description
Bovine tuberculosis screening. Vet measuring a fold of skin on the neck of a cow prior to injecting it with tuberculin. This is the first step in the intradermal comparitive tuberculin test, the standard test used to screen cattle for bovine tuberculosis (TB). During the test tuberculin from Mycobacterium bovis is injected into the skin at one site in the neck. In most cattle infected with M. bovis the tuberculin causes localised sweeling. To ensure that any reaction is not caused by other mycobacteria, tuberculin from M. avium is injected at another site. The size and nature of the allergic reactions at each site are compared to determine a negative, positive, or inconclusive result.
Uploaded
October 5th, 2018
Embed
Share
Comments
There are no comments for Bovine Tuberculosis Screening. Click here to post the first comment.