Abstract：
:The addition of increasing physiological concentrations of ammonia or amino acids had distinct effects on the growth and proteolytic activity of Streptococcus bovis JB1, Prevotella albensis, and Butyrivibrio fibrisolvens DSM3071. The growth of S. bovis and B. fibrisolvens was enhanced by NH(3) and AA, and that of P. albensis was reduced compared with a control with protein as the sole source of nitrogen. The proteolytic activity of S. bovis and P. albensis was reduced, but that of B. fibrisolvens was improved. NH(3) seemed to act mainly on the cell-associated fraction of the proteolytic activity, while the action of AA was not specific. In the rumen the proteolytic activity of S. bovis and P. albensis would be optimal at low concentrations of NH(3) or AA (<0.05 and <0.27 g/L respectively). In contrast, B. fibrisolvens would need higher concentrations (0.5 g/L of NH(3) or 2.7 g/L of AA). It can be assumed that these bacteria will grow in different ecological niches.
journal_name
Curr Microbioljournal_title
Current microbiologyauthors
Sales M,Lucas F,Blanchart Gdoi
10.1007/s002840010074keywords:
subject
Has Abstractpub_date
2000-06-01 00:00:00pages
380-6issue
6eissn
0343-8651issn
1432-0991pii
10.1007/s002840010074journal_volume
40pub_type
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abstract：:The authors would like to correct the errors in the publication of the original article. ...
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