Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-03T05:35:49.706Z Has data issue: false hasContentIssue false
  • English
  • Français

Interrelationships between different chemical components in mixed rumen bacteria

Published online by Cambridge University Press:  27 March 2009

A. B. McAllan  and
R. H. Smith
A. B. McAllan
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading RG2 9AT
R. H. Smith
Affiliation:
National Institute for Research in Dairying, Shinfield, Reading RG2 9AT
Get access Rights & Permissions [Opens in a new window]

Extract

Mixed rumen bacteria entering the duodenum of a ruminant are a major source of some of the nutrients required by the animal. A number of values for the chemical composition of mixed rumen bacteria have been reported and a few observations made on interrelationships between different components at different times after feeding (Hoogenraad & Hird, 1970; Jouany & Thivend, 1972; Bird, 1973; Smith & McAllan, 1973; Czerkawski, 1975; McAllan & Smith, 1974, 1976). There is also some published information on in vivo variations in the storage carbohydrate in mixed rumen bacteria with different diets (Jouany & Thivend, 1972; McAllan & Smith, 1976) but no information on interrelationships between such variations and changes in other components in the bacteria.

The present paper reports a study of such interrelationships in bacterial samples, containing wide ranges of storage polysaccharide (α-dextran) and crude protein concentrations, obtained from steers given a wide variety of diets.

Type
Short Note
Information
The Journal of Agricultural Science , Volume 86 , Issue 3 , June 1976 , pp. 639 - 642
Copyright
Copyright © Cambridge University Press 1976

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bird, P. R. (1973). Sulphur metabolism and excretion studies in ruminants. XII. Nitrogen and sulphur composition of ruminal bacteria. Australian Journal of Biological Sciences 26, 1429–34.CrossRefGoogle ScholarPubMed
Czerkawski, J. W. (1975). Composition of microbial matter in the rumen. Proceedings of the Nutrition Society 34, 62A–63A.Google ScholarPubMed
Hoogenraad, N. J. & Hird, F. J. R. (1970). The chemical composition of rumen bacteria and cell walls from rumen bacteria. British Journal of Nutrition 24, 119–27.Google Scholar
Jouany, J. P. & Thivend, P. (1972). Évolution postprandiale de la composition glucidique des corps microbiens du rumen en fonction de la nature des glucides du régime. II. Les bactéries. Annales de Biologie Animate, Biochimie, Biophysique 12, 679–83.CrossRefGoogle Scholar
McAllan, A. B. & Smith, R. H. (1974). Carbohydrate metabolism in the ruminant. Bacterial carbohydrates formed in the rumen and their contribution to digesta entering the duodenum. British Journal of Nutrition 31, 77–88.Google Scholar
MoAllan, A. B. & Smith, R. H. (1976). Some effects of variation in carbohydrate and nitrogen intakes on the chemical composition of mixed rumen bacteria from young steers. British Journal of Nutrition In the Press.Google Scholar
Smith, R. H. & McAllan, A. B. (1970). Nucleic acid metabolism in the ruminant. 2. Formation of microbial nucleic acids in the rumen in relation to the digestion of food nitrogen, and the fate of dietary nucleic acids. British Journal of Nutrition 24, 545–56.Google Scholar
Smith, R. H. & McAllan, A. B. (1973). Chemical composition of rumen bacteria. Proceedings of the Nutrition Society 32, 9A–10A.Google ScholarPubMed
Smith, R. H. & McAllan, A. B. (1974). Some factors influencing the chemical composition of mixed rumen bacteria. British Journal of Nutrition 31, 27–34.CrossRefGoogle ScholarPubMed