Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 2/10/2015
Publication Date: 3/3/2015
Citation: Arthur, T.M., Agga, G.E., Harhay, D.M. 2015. Effectiveness of an increased dose of Bovamine compared to a lower dose to reduce Salmonella in fed cattle. [Abstract]. Beef Industry Safety Summit. http://www.bifsco.org/2015researchsessionabstracts.aspx.
Technical Abstract: Category: Pre-harvest pathogen reduction Published: unpublished to date Objective: To examine the effect of increasing the probiotic dose from Bovamine® to Bovamine® Defend™ on the prevalence of Salmonella in pen environments, fecal samples and subiliac lymph nodes of fed cattle. Experimental Design & Analysis: Approximately 2,200 steers were placed in a feedlot in BIFSCo region 3 in March and early April of 2014. Prior to processing, treatments were randomly assigned to 20 pens. Cattle were fed for approximately five months until harvest. Ten pens were considered as “control” and their ration was supplemented with the probiotic Bovamine® at a dose of 10e6 CFU per head per day. The other ten pens were considered as “treated” and their ration was supplemented with the probiotic Bovamine® Defend™ at a dose of 10e9 CFU per head per day. Pen surface material and water troughs were sampled from all pens when cattle were placed and at reimplant. Hide and fecal swabs were collected from 24 head from each pen when cattle were placed and at reimplant. At harvest, fecal swabs and both subilliac lymph nodes were collected from 24 head from each pen at the processing plant. All samples were processed for Salmonella concentration and prevalence. Key Results: There were no weight differences observed at reimplant or for final weights. Carcass weight was not affected by treatment. There were no differences in Salmonella prevalence for hide, fecal or soil samples at reimplant. There was no difference in Salmonella prevalence for fecal or lymph node samples at harvest. How can this information be applied in the industry? This study provides information to beef producers regarding the efficacy of Bovamine® as compared to Bovamine® Defend™ in reducing Salmonella associated with feedlot cattle.