Journal of Hygiene

Research Article

Further observations on the effect of feeding diets containing avoparcin, bacitracin and sodium arsenhlate on the colonization of the alimentary tract of poultry by salmonella organisms

H. Williams Smitha1 and J. F. Tuckera1

a1 Houghton Poultry Research Station, Houghton, Huntingdon, Cambs. PEI 7 2DA


The continuous administration of food containing 10 mg/kg of avoparcin to groups of 28 chickens in contact with five chickens experimentally infected with a nalidixic acid-resistant (nalr) mutant of a salmonella strain strongly favoured the colonization of their alimentary tracts with salmonella organisms. Bacitracin, 10 mg/kg, either had no effect or only slightly favoured salmonella colonization and sodium arsenilate usually hindered it.

(Received June 02 1979)