Effect of Sub-Therapeutic Levels of Antimicrobials in Feed on the Intestinal Carriage of Campylobacter and Salmonella in Turkeys

Studies have been published in which it was determined that competitive exclusion cultures, administered to birds to control colonization by human pathogens such as Salmonella, can be negatively affected by antimicrobials commonly used in poultry rations. Other published studies have reported an increase in Salmonella levels when experimentally challenged birds were fed diets containing low levels of antimicrobials. This study demonstrated that although naturally occurring populations of Campylobacter were virtually unaffected by antimicrobial feed additives, Salmonella populations were significantly decreased when commercial turkeys were fed rations containing flavomycin, virginiamycin, or monensin.

Provided by: Poultry Science Association Topic: Software Date Added: Mar 2003 Format: PDF

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