ドライエクストルーダ処理飼料用米の第一胃内消化特性

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タイトル別名
  • Effect of Extrusion on <i>In situ</i> Rumen Degradability of Brown Rice and Whole Rice with Hulls
  • ドライエクストルーダ ショリ シリョウ ヨウマイ ノ ダイイチ イ ナイ ショウカ トクセイ

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<p>This experiment was carried out to investigate in situ dry matter rumen degradability (ISDMD) of extruded brown rice (EBR) and extruded whole rice with hulls (EWR). The ISDMD was measured using the in situ nylon bag technique (incubation times : 0, 3, 6, 9, 12, 24 and 48 hours). A single-screw dry extruder was used to process the rice. The EBR, EWR, brown rice (BR), whole rice with hulls (WR) and barley were ground (2mm) and incubated in the rumen of two Japanese black cattle fed forage and concentrate in a ratio of 1 : 4 on a dry matter basis. Neutral detergent fiber contents of BR and WR decreased, whereas non-fibrous carbohydrate contents increased, with extrusion processing. The effective degradability (passage rate, 5%/hour) of dry matter from WR increased from 56.6% to 78.9% with extrusion. Results suggest that the utilization of rice by beef cattle are improved with extrusion.</p>

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