Nutritional Interdependence Among Rumen Bacteria During Cellulose Digestion In Vitro
AUTOR(ES)
Miura, Hideki
RESUMO
A study has been made of the promoting effect of starch on cellulose digestion by mixed rumen bacteria in a cellulose-urea medium. Starch supplementation of the medium promoted the growth of bacteria that required neither amino acids (AA) nor branched-chain fatty acids (BrFA). The growth of these bacteria was followed by the growth of AA-dependent bacteria, AA- or BrFA-dependent bacteria, BrFA-producing bacteria, and finally, BrFA-dependent cellulolytic bacteria. Population changes of these bacterial groups corresponded with a cross-feeding of AA and BrFA and the overall disappearance of cellulose. The data suggest that the nutritional interdependence among rumen bacteria affects the rate of cellulose digestion.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=242355Documentos Relacionados
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