Asian-Australasian Journal of Animal Sciences

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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STUDIES ON METHIONINE METABOLISM IN THE RUMEN BACTERIA OF GOATS

  • Muramatsu, T. (Laboratory of Animal Nutrition, School of Agricultural Sciences Nagoya University) ;
  • Numa, M. (Laboratory of Animal Nutrition, School of Agricultural Sciences Nagoya University) ;
  • Ueda, Y. (Laboratory of Animal Nutrition, School of Agricultural Sciences Nagoya University) ;
  • Furuse, M. (Laboratory of Animal Nutrition, School of Agricultural Sciences Nagoya University) ;
  • Okumura, J. (Laboratory of Animal Nutrition, School of Agricultural Sciences Nagoya University) ;
  • Samukawa, K. (Laboratory of Soil Sciences, Faculty of Agriculture, University of Osaka Prefecture)
  • Received : 1993.10.29
  • Accepted : 1994.01.19
  • Published : 1994.06.01
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Abstract

The metabolic fate of methionine in rumen bacteria was studied by intraruminal administration of $^{15}N$ and $1-^{13}C$ labeled methionine in goats. Time course changes in isotopic abundance of amino acids in the rumen bacteria were determined with a computer-controlled gas-chromatograph mass spectrometer. The results from the transition of peak isotopic abundance in amino acids indicated that in rumen bacteria the $^{15}N$ or $^{13}C$ isotope in the methionine molecule was transferred rapidly to into bacteria, methionine administered intraruminally may not be retained as it is, but would be converted quickly to other metabolites in the bacteria.

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