https://scholars.lib.ntu.edu.tw/handle/123456789/87856
標題: | 纖維分解酵素於青貯製作應用方法之改善 | 作者: | 徐濟泰 | 關鍵字: | 纖維分解酵素;狼尾草青貯;玉米青貯;Fibrolytic enzymes;Napier grass silage;Corn silage | 公開日期: | 2004 | 出版社: | 臺北市:國立臺灣大學動物科學技術學系暨研究所 | 摘要: | 本試驗採用兩種不同成熟度狼尾草與玉米,分別進行(1)對照組不添加任何物質;(2)添加乳酸菌(Lactobacillus plantarium);(3)同時添加乳酸菌以及纖維素與半纖維素分解酵素;(4)同時添加乳酸菌、纖維素與半纖維素分解酵素以及α-L-arabinofuranosidase 與feruloyl esterase 之青貯製作試驗。處理組2 乳酸菌的添加與對照組相比較,可以確保顯著較低的青貯pH 值與顯著較高的青貯評分,以及顯著較高的乾物質試管消化率。使用纖維分解酵素的處理組3 與4,顯著降低乾物質試管消化率。對兩種成熟度玉米之青貯,處理組2 乳酸菌或纖維分解酵素的使用與對照組相比較,沒有改善任何青貯的品質。泌乳羊飼養試驗顯示較老熟狼尾草四種處理之青貯,所得乾物質採食量(1837, 1743, 1817, 1834 g/day)、4%乳脂修正乳量(1826, 1804, 1549, 1724 g/day)與中洗纖維表面消化率(77, 79, 76,77%)並無顯著之差異。較幼嫩狼尾草的青貯亦是有相同結果。較老熟玉米四種處理之青貯泌乳羊飼養試驗,所得乾物質採食量(1142, 1039, 1096, 1103 g/day)、4%乳脂修正乳量(1744, 1501, 1665, 1706 g/day)與中洗纖維表面消化率(56, 56, 51,41%)並無顯著之差異。較幼嫩玉米的青貯,所得乾物質採食量(1175, 1294, 1187,1328 g/day)與4%乳脂修正乳量(1665, 1340, 1811, 1779 g/day)亦無顯著的處理組間之差異。整體而言,乳酸菌的添加可以改善狼尾草青貯的品質,但是無助益於玉米青貯。本試驗所採用纖維分解酵素的添加,並無法進一步改善青貯的纖維消化率。 The present study used Napier grass and corn of two maturities to test the silage making by (1)control without additive, (2)added with Lactobacillus planetarium, (3)added with Lactobacillus planetarium in combination with cellulose and xylanase, (4)same as treatment 3 with addition of α-L-arabinofuranosidase and feruloyl esterase. Compared to the control, treatment 2 resulted in significantly lower silage pH and higher silage score along with higher in vitro dry matter digestibility (IVDMD). Usage of fibrolytic enzymes in treatments 3 and 4 resulted in significantly lower IVDMD than treatment 2. For corn silage making, usage of lactic acid bacterial inoculant or fibrolytic enzymes did not resulted in better silage quality than the control. Dairy goat lactation studies showed no difference of DM intake (1837, 1743, 1817, 1834 g/day), 4%FCM (1826, 1804, 1549, 1724 g/day) or apparent NDF digestibility(77, 79, 76, 77%) among treatment groups for matured Napier grass silages. Dairy goats fed less matured Napier grass silages had similar response as those fed matured Napier grass silages. For the matured corn silage, dairy goat lactation study showed no significant difference of DM intake (1142, 1039, 1096, 1103 g/day), 4%FCM (1744, 1501, 1665, 1706 g/day) and apparent NDF digestibility (56, 56, 51, 41%). For less matured corn silage, lactation study showed no significant difference of DM intake (1175, 1294, 1187, 1328 g/day) and 4%FCM (1665, 1340, 1811, 1779 g/day). In conclusion, lactic acid bacterial inoculant could improve the silage quality of Napier grass, but had no benefit toward corn silage quality. Application of fibrolytic enzymes in addition to lactic acid bacterial inoculant could not further improve fiber digestibility for both Napier grass and corn silages. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/16468 | 其他識別: | 922313B002143 | Rights: | 國立臺灣大學動物科學技術學系暨研究所 |
顯示於: | 動物科學技術學系 |
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