IN VITRO DEGRADATION OF MIMOSINE BY MICROORGANISMS FROM THE ESOPHAGEAL SAC OF VOLES ( Microtus arvalis )

The microbiota in the esophageal sac of voles fed either cubed alfalfa hay or concentrate pellets were assayed to determine their capacity to anaerobically degrade mimosine in vitro. Differences (P < 0.01) were found between the two diets during the growth phase. The sac contents of voles fed...

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Bibliographic Details
Published in:Canadian Journal of Animal Science
Main Authors: KUDO, H., CHENG, K.-J., MAJAK, W., HALL, J. W., ARAI, T., OKI, Y., COSTERTON, J. W.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1986
Subjects:
Animal Science and Zoology
Food Animals
Microtus arvalis
Online Access:http://dx.doi.org/10.4141/cjas86-058
http://www.nrcresearchpress.com/doi/pdf/10.4141/cjas86-058
Description
Summary:The microbiota in the esophageal sac of voles fed either cubed alfalfa hay or concentrate pellets were assayed to determine their capacity to anaerobically degrade mimosine in vitro. Differences (P < 0.01) were found between the two diets during the growth phase. The sac contents of voles fed concentrate pellets degraded mimosine and 3-hydroxy-4-(1H)-pyridone (DHP) rapidly, but inocula from voles fed cubed alfalfa hay only hydrolyzed mimosine to DHP. Degradation of the pyridine ring occurred at the early stage of incubation, concurrently with microbial growth. Thereafter, degradation rates appear to have been almost negligible and very similar for both diets. These results agree with previous data obtained with ruminal microorganisms, where highly active inocula were also associated with animals on concentrate diets. Key words: Detoxification, hydrolysis, esophageal sac, mimosine, 3-hydroxy-4- (1H)-pyridone, voles

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