Fermentation Quality of Floating Rice Plant (Oryza sativa L.) Silages as Affected by Mixing with Phasey Bean (Macroptilium lathyroides (L.) Urb.)

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  • ファジービーン(Macroptilium lathyroides (L.) Urb.)混合が浮イネ(Oryza sativa L.)サイレージの発酵品質に及ぼす影響
  • ファジービーン Macroptilium lathyroides L Urb コンゴウ ガ ウキイネ Oryza sativa L サイレージ ノ ハッコウ ヒンシツ ニ オヨボス エイキョウ

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Fermentation quality and palatability of floating rice plant (Oryza sativa L.), phasey bean (Macroptilium lathyroides (L.) Urb.), and mixed silages were investigated for ensiling in laboratory silos and bag silos. In Experiment 1, floating rice plant (strain Gour Kajol (FRC8) or Rayada (FRC14)) and phasey bean were ensiled in laboratory silos (1-litre polyethylene silo, about 700g) with varying compositions of the materials (0, 12.5, 25, 50 and 100% phasey bean on a fresh weight basis). After storing for 47 days, the silos were opened and silage samples were analyzed for fermentation quality and V-SCORE calculation. Floating rice plant materials showed high mono- and oligo-saccharide content, and the resulting silages showed high fermentation quality. Mixing phasey bean into the floating rice plants improved the crude protein content and fermentation quality of silage, as indicated by higher lactic acid production. In Experiment 2, FRC8 and phasey bean were ensiled in bag silos (about 10kg) with varying compositions of the materials (0, 50 and 100% phasey bean on a fresh weight basis). Silages were fed to Holstein cows and were tested for palatability by the cafeteria method. Floating rice plant silage, phasey bean silage and mixed silages showed high fermentation quality. The dry matter intake was highest for phasey bean silage>mixed silage of phasey bean into floating rice plant>floating rice plant silage.

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