Inhibition of colonization of the chicken alimentary tract with Salmonella typhimurium gram-negative facultatively anaerobic bacteria

Author:

Barrow P. A.,Tucker J. F.,Simpson J. M.

Abstract

SUMMARYOral administration of strains of food poisoning salmonellas to day-old chickens produced a profound inhibition in the subsequent colonization of the caeca by a strain of Salmonella typhimurium given one day later. Closely related genera were unable to produce a similar inhibition. The inhibition was not the result of bacteriophages produced by the first strain. Neither was it the result of an immunological response by the host induced by the first strain. In additional experiments in day-old chickens, inhibition of an Escherichia coli Nalr strain and of a Citrobacter sp. Nalr strain was produced by the antibiotic-sensitive forms of the homologous strains while strains from other genera did not produce any inhibition. When an avirulent mutant of S. typhimurium was used for pre-treatment a statistically significant reduction in the excretion of the super-infecting S. typhimurium Nalr strain over several weeks was produced. A genus specific inhibition was reproduced in vitro by mixed culture experiments. Live cultures were necessary for in vitro inhibition. Killed cells or a culture supernatant produced no inhibition.

Publisher

Cambridge University Press (CUP)

Subject

Infectious Diseases,Epidemiology

Reference21 articles.

1. Goren E. (1982). Unpublished data cited by Pivnick H. & Nurmi E. (1982). The Nurmi concept and its role in the control of Salmonella in poultry. Developments in Food Microbiology. 1, 41–70. London: Applied Science Publishers Ltd.

2. PREVENTION OF SALMONELLA TYPHIMURIUM INFECTION IN POULTRY BY PRETREATMENT OF CHICKENS AND POULTS WITH INTESTINAL EXTRACTS

3. Cultivation of a bacterial flora able to prevent the colonization of Salmonella infantis in the intestines of broiler chickens, and its use;Rantala;Acta Pathologica Microbiologica Scandinavica,1974

4. Pivnick H. & Blanchfield B. (1982). Unpublished data cited by Pivnick H. & Nurmi E. (1982). The Nurmi concept and its role in the control of Salmonella in poultry. Developments in Food Microbiology 1, 41–70. London: Applied Science Publishers Ltd.

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