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Effects of Food Intake on Numbers of Salmonellae and Escherichia coli in Rumen and Faeces of Sheep
Author(s) -
Grau F. H.,
Brownlie L. E.,
Smith M. G.
Publication year - 1969
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1969.tb02195.x
Subject(s) - rumen , feces , biology , salmonella , inoculation , escherichia coli , microbiology and biotechnology , food science , starvation , zoology , bacteria , horticulture , fermentation , biochemistry , genetics , gene , endocrinology
When 10 7 –10 8 Salmonella anatum or Salm. typhimurium were inoculated into the rumen of sheep consuming 1·3 kg of lucerne chaff daily, salmonellae were eliminated from the rumen in 2 days, and could not be detected in the faeces after c. 1 week. During starvation, both Escherichia coli and salmonellae grew in the rumen. Resumption of feeding after starvation for 3 days caused further multiplication of E. coli and salmonellae in the rumen. The organisms were subsequently eliminated with further feeding. Inoculation with as few as 400 salmonellae cells into a starved sheep led to large numbers of salmonellae appearing in the faeces and being excreted in varying numbers for at least 5 weeks after resumption of feeding.