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The incidence of Streptococcus bovis in cattle
Published online by Cambridge University Press: 27 March 2009
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1. The numbers of Streptococcus bovis in the rumen of a heifer and a steer, each having a permanent rumen fistula, were shown to remain relatively constant within the range 105 to 107 per ml. rumen liquid (strained rumen contents) over a period of more than 3 years.
2. The numbers of Strep. bovis were little affected by the change in diet from stall-feeding (oats, beans, hay and straw) to grass or vice versa.
3. There was a slight increase in the numbers of Strep. bovis following each meal when the animals were stall-fed, but no appreciable variation in numbers throughout the day when the animals were at grass.
4. Strep. bovis has also been isolated from the rumen of freshly slaughtered cattle and sheep from different parts of the country, from the rumen of goats and calves and from the faeces of cattle, goats and in small numbers associated with Strep. equinus from horse dung.
5. Strep. bovis was found in the contents of the omasum, large intestine and caecum of three cattle, but in the small intestine of only one of these animals. Very small numbers of Strep. bovis were detected in the abomasal contents of only four of twelve animals examined.
6. The characteristics of these strains of Strep. bovis have been described. The synthesis of an iodophilic polysaccharide by Strep. bovis has been demonstrated.
7. A possible role of Strep. bovis in the decomposition of starch and other carbohydrates in the rumen is discussed.
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- Copyright © Cambridge University Press 1954
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