ウシの反芻時咀嚼による飼料片の微細化と繊維質発酵との関連

• 鈴木 知之

  北海道大学大学院農学研究科

• 播 軍

  北海道大学大学院農学研究科

• 泉 賢一

  北海道大学大学院農学研究科 酪農学園大学酪農学部

• 上田 靖子

  北海道大学大学院農学研究科 農林水産省東北農業試験場

• 上田 宏一郎

  北海道大学大学院農学研究科

• 田中 桂一

  北海道大学大学院農学研究科

• 大久保 正彦

  北海道大学大学院農学研究科

書誌事項

タイトル別名

• Relationship between Comminution of Feed Particles during Rumination and Fiber Fermentation in Cattle

抄録

The relationship between comminution of ruminal feed particles during rumination cycle and fiber fermentation was evaluated using three steers fistulated at esophagus fed orchardgrass hay (OG) and alfalfa hay (ALF) once daily. The particle size distribution (LP; >5600, MP; 5600-1180, SP; 1180-300, FP; 300-47, μm) was determined for bolus collected from esophagus fistula during each rumination cycle. Bolus were incubated in the reticulo-rumen of sheep for 12, 24 and 48h using nylon bag technique. Comminuted large particles (LP+MP; retained on a 1.18 mm screen) and number of chews during one rumination cycle were not differ between OG and ALF (1.6vs. 2.0g and 60.8vs. 63.4, respectively). The proportion of comminuted large particle and specific fragility (comminuted large particle/chews/large particle retained in the mouth before chewing) for OG tended to be greater than for ALF (87.5vs. 61.6% and 14.8 vs. 9.8, respectively). Neutral detergent fiber (NDF) disappearance rate at 48h incubation was higher for bolus after chewing than those before chewing in both OG (49.4vs. 46.5%) and ALF (25.2vs. 8.1%). The facilitation of fiber fermentation by chewing during rumination was affected by forage species or the comminution pattern of large particles.

収録刊行物

• 日本畜産学会報

  日本畜産学会報 71 (9), 331-337, 2000

  公益社団法人 日本畜産学会

キーワード

• Rumination
• Feed particles comminution
• Fiber fermentation
• Hay
• Cattle

詳細情報

• CRID: 1390282680173191936
• NII論文ID: 130000742459
• DOI: 10.2508/chikusan.71.9_331
• ISSN: 18808255
• ISSN: 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