Effects of Food Intake on Numbers of Salmonellae and Escherichia coli in Rumen and Faeces of Sheep |
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| Authors: | F H Grau L E Brownlie M G Smith |
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| Institution: | Meat Research Laboratory, Division of Food Preservation, C.S.I.R.O., Brisbane, 4170, Australia |
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| Abstract: | When 107–108 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. |
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