Reference | O.Connor_2002_CaJoofVeRe (10318)

The study population consisted of 139 purebred yearling bulls of various breeds housed in an open-sided barn at the University of Guelph bull test station between October 1998 and February 1999. While at the facility, all cattle received the same diet. The cattle were grouped in 8 pens with various numbers of cattle per pen. At the time of treatment, a fecal sample was collected per rectum from the treated animal and from the 2 untreated controls. Of the 139 animals in the study population, complete data (samples collected both before and after the addition of chlortetracycline to the diet) were available for 83. This data set contained matched samples from 39 animals that received both injectable oxytetracycline and in-feed chlortetracycline and 44 animals that received only in-feed chlortetracycline.

fecal sample was collected per rectum

AST Method: Agar Dilution

Reference explicitly reports AST breakpoints: True

Reference reports using a MIC table: False