蒸煮•爆砕処理が小麦わらの成分含量およびその反芻胃内分解様相に及ぼす影響

書誌事項

タイトル別名
  • Effect of Steam-Explosion of Wheat Straw on its Chemical Composition and Ruminal Degradation Characteristics

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抄録

Changes in chemical composition of steam-exploded wheat straw and its ruminal degradation characteristics were determined by in situ incubation to clarify the mechanism of effect of steam-explosion on wheat straw. The steam-explosion has been done under two different conditions such as, 1) steamed for 10min under the pressure of 10kg/cm2 and exploded at the pressure of 12kg/cm2 (treatment 1), and 2) steamed for 10min under the pressure of 8kg/cm2 and exploded at 13kg/cm2 (treatment 2). Wheat straw cut to 4cm was used as a control. Samples of wheat straw with and without treatment were incubated in the rumen of sheep given oats hay as a sole diet. Steam-explosion treatment reduced concentrations of neutral detergent fiber (NDF) and hemicellulose (HC), but increased that of cellular contents. Fast degradable fraction of dry matter was significantly increased, but indigestible fraction decreased in both treatments (P⟨ 0.05). Discrete lag time of NDF and HC was significantly shortened in samples of treatments 1 and 2. The degradation rate of HC was significantly increased in samples of treatment 1 (P⟨0.05). The digestible fraction of cellulose was significantly increased in samples of treatment 1 (P⟨0.05). Discrete lag time of acid detergent lignin (ADL) was significantly shortened in both treatments (P⟨0.05). The degradable fraction of ADL was significantly increased in samples of treatment 1 (P⟨0.05). From these results, it is concluded that effect of steam-explosion is to loosen or to promote decomposition of lignin covering or bounding chemically with cellulose and hemicellulose in fibrous fraction and to expose them to the attack of ruminal microorganisms.

収録刊行物

  • 日本畜産学会報

    日本畜産学会報 69 (3), 293-298, 1998

    公益社団法人 日本畜産学会

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参考文献 (17)*注記

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詳細情報

  • CRID
    1390001205196182912
  • NII論文ID
    10021726691
  • NII書誌ID
    AN00195188
  • DOI
    10.2508/chikusan.69.293
  • ISSN
    18808255
    1346907X
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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