Multi-drug resistant Salmonella Dublin cultured from cryopreserved Holstein semen

Abstract

Salmonella enterica subspecies enterica serotype Dublin, com­monly referred to as Salmonella Dublin, has emerged as one of the most isolated serotypes of Salmonella in U.S. cattle. A highly multi-drug resistant isolate of Salmonella Dublin was cultured at the Wisconsin Veterinary Diagnostic Laboratory (WVDL) from both the raw and cryopreserved, extended semen of a 17-month-old clinically healthy Holstein bull. The objective of this study was to use antemortem and postmortem diagnos­tic testing to evaluate the systemic health of the bull and deter­mine where he was harboring the Salmonella Dublin infection.