查詢結果分析
來源資料
相關文獻
- 苜蓿、百慕達與盤固乾草乾物質和細胞壁成分在瘤胃原位的分解特性
- The Effects of Starch and Protein Degradation Rates, Hay Sources, and Feeding Frequency on Rumen Microbial Fermentation in a Continuous Culture System
- 輸送眼藥用之原位成膠PAA、Gelrite及PAA/Gelrite系統流變行為之探討
- 都市污泥轉化再利用
- Isolation and Application of Thermotolerant Microbes in Composting
- 厭氧流體化床之生物膜顆粒層次模型及代謝活性試驗
- 以超音波/過氧化氫法處理石化廢水之可行性研究
- Effects of Oxygen Concentrations and Hydrogen Peroxide on the Removal of 2,4-Dichlorophenol in Sand Columns
- 利用蔗漿開發無公害紙漿成形紙餐具
- 探討食用、藥用真菌在國小自然科教學的應用
頁籤選單縮合
題 名 | 苜蓿、百慕達與盤固乾草乾物質和細胞壁成分在瘤胃原位的分解特性=In Situ Ruminal Degradation Characteristics of Dry Matter and Cell Wall Components in Alfalfa, Bermuda, and Pangola Hays |
---|---|
作 者 | 楊价民; 鄭永祥; 林育安; 李春芳; | 書刊名 | 中華農學會報 |
卷 期 | 185 1999.03[民88.03] |
頁 次 | 頁81-100 |
分類號 | 437.113 |
關鍵詞 | 苜蓿乾草; 百慕達乾草; 盤固乾草; 瘤冑; 原位; 分解; Alfalfa hay; Bermuda hay; Pangola hay; In situ; Rumen; Degradability; |
語 文 | 中文(Chinese) |
中文摘要 | 苜宿、百慕達與盤固乾草是國內酪農經常使用的芻料,本試驗的目的主要是探討 這三種乾草在瘤胃的分解程度和速率,作為日糧調製的參考。將 6g 的乾草分別置於尼龍袋 內,然後放入荷蘭閹公牛的瘤胃中與微生物培養 0 至 72 h,尼龍袋內的乾草隨著培養時間 的增加而減少。乾物質 (DM) 和細胞內容物 (CO) 的原位分解程度 (72 h) 以苜蓿的最高, 百慕達的最低 (P<0.05)。 然而,除了半纖維素 (HE) 之外,乾草細胞壁戌分的分解程度以 苜蓿的較高,苜宿和百慕達的較低 (P<0.05)。 根據培養時間和乾草在原位的消失百分比估計, DM 和 CC 的分解速率以苜蓿最快,盤 固的較慢和最慢 (P<0.05);而中洗纖維 (NDF) 和 HE 的分解速率仍以苜蓿最快,百慕達的 最慢 (P<0.05)。 至於酸洗纖維 (ADF) 和纖維素 (CE),分解速率以盤固較快或最快,百慕 達的較慢或最慢 (P<0.05)。在固體通過瘤胃速率為 2、5 和 8 %/h 的情況,乾草之間在細 胞成分瘤胃有效分解率的相對差異,大致與分解程度方面有相同的趨勢。細胞內容物和細胞 壁的快速分解可能是苜蓿乾草在瘤胃有效分解率較高的主要因素。大部分的盤固乾草成分都 有分解延遲時間偏長的現象,然而細胞壁的分解率較高。 將乾草置於試管中與瘤胃微生物培養 48 小時,乾草的 DM 消化率仍以苜蓿最高,百慕 達最低 (P<0.05)。 NDF 和 ADF 的消失率以盤固最高,百慕達最低 (P<0.05)。當苜蓿取代 10% 的百慕達和盤固一起培養,試管中的 pH 降低,而 DM、NDF 和 ADF 的消化率不但高於 百慕達和盤固分別單獨培養的情況,而且高於理論的增加值。 本試驗的結果顯示,乾草的瘤胃分解動力差異可能和化學組成有關。苜蓿的 NDF 的含 量最少, DM 和 CC 的分解速率最高; 而苜蓿細胞壁的木質素含量最高,不可分解的細胞壁 含量也鉸多。百慕達的酸不溶解灰分和木質素的總和為最高,而幾乎所有細胞成分的分解率 是最低的。 |
英文摘要 | The objective of this study was to investigate in situ ruminal digestion kinetics of alfalfa, bermuda and pangola hays. A sample size of 6 g of each hay was weighed into nylon bags and incubated in the rumen for 0 to 72 h. The hays disappeared from the bags as ruminal incubation times proceeded. The extent (72 h) of in situ dry matter (DM) and cell contents (CC) degradation was the highest for alfalfa and the lowest for bermuda (P< 0.05). However, the disappearance extent of cell wall (NDF) and its components was higher for pangola and lower for alfalfa and bermuda (P< 0.05), with the exception of hemicellulose (HE). Estimates based on in situ disappearance percentages and incubation times show that alfalfa DM and CC were most rapidly degraded among the hays (P< 0.05). These two fractions from pangola were degraded at a slower or the slowest rate (P< 0.05), respectively. The NDF and HE degradation rates remained the fastest with alfalfa, and were the slowest with bermuda (P< 0.05). Acid detergent fiber (ADF) and cellulose degradation rates were faster or the fastest for pangola, and were slower or the slowest for bermuda (P< 0.05). Relative differences among the hays in effective degradability of cell components at ruminal solid passage rate of 2, 5, and 8%/h were similar to those of in situ extent of degradation (72 h). When the hays were incubated with rumen microorganisms in vitro (48 h), DM degradation was still the greatest for alfalfa, and the smallest for bermuda. In NDF and ADF, pangola was degraded to the highest extent, and bermuda had the lowest extent. When 10% alfalfa was included in pangola or bermuda incubations, the pH of incubation medium decreased (P< 0.05). Digestion of DM, NDF, and ADF was improved with alfalfa inclusion. The results of this study indicate that hay differences in degradation kinetics may be related to chemical composition. Alfalfa had the lowest NDF content, and DM and CC degradabilities were the highest. However, lignin content in alfalfa NDF was the highest, and undegrated NDF content was higher. Bermuda was the highest in acid insoluble ash plus lignin contents, and almost all cell components had the lowest degradability. |
本系統中英文摘要資訊取自各篇刊載內容。