Evaluation of Some Aquatic Plants from Bangladesh through Mineral Composition, In Vitro Gas Production and In Situ Degradation Measurements

  • Khan, M.J. (Department of Animal Nutrition, Bangladesh Agricultural University) ;
  • Steingass, H. (Institute of Animal Nutrition, University of Hohenheim) ;
  • Drochner, W. (Institute of Animal Nutrition, University of Hohenheim)
  • Received : 2001.07.24
  • Accepted : 2001.11.07
  • Published : 2002.04.01


A study was conducted to evaluate the nutritive potential value of different aquatic plants: duckweed (Lemna trisulaca), duckweed (Lemna perpusila), azolla (Azolla pinnata) and water-hyacinth (Eichhornia crassipes) from Bangladesh. A wide variability in protein, mineral composition, gas production, microbial protein synthesis, rumen degradable nitrogen and in situ dry matter and crude protein degradability were recorded among species. Crude protein content ranged from 139 to 330 g/kg dry matter (DM). All species were relatively high in Ca, P, Na, content and very rich in K, Fe, Mg, Mn, Cu and Zn concentration. The rate of gas production was highest in azolla and lowest in water-hyacinth. A similar trend was observed with in situ DM degradability. Crude protein degradability was highest in duckweed. Microbial protein formation at 24 h incubation ranged from 38.6-47.2 mg and in vitro rumen degradable nitrogen between 31.5 and 48.4%. Based on the present findings it is concluded that aquatic species have potential as supplementary diet to livestock.


Aquatic Plants;Mineral Composition;Gas Production;Rumen Degradable Nitrogen;In Situ Degradability


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