| 低温条件下混合乳酸菌制剂对芦苇发酵品质的影响 |
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| 引用本文： | 王鹏,白春生,刘林,曹兵海. 低温条件下混合乳酸菌制剂对芦苇发酵品质的影响[J]. 草地学报, 2011, 19(1): 127-131. DOI: 10.11733/j.issn.1007-0435.2011.01.022 |
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| 作者姓名： | 王鹏 白春生 刘林 曹兵海 |
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| 作者单位： | 吉林大学畜牧兽医学院,长春,吉林,130062;中国农业大学动物科技学院,北京,100193;沈阳农业大学园艺学院,沈阳,辽宁,116101;北京奶牛中心,北京,100192;中国农业大学动物科技学院,北京,100193 |
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| 基金项目： | 国家现代农业产业技术体系建设专项资金 |
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| 摘 要： | 为探讨低温条件下混合乳酸菌制剂对芦苇(Phragmites australis Cav.Trin.ex Sterd.)发酵品质的影响,对含水量为40%的芦苇添加混合乳酸菌制,分别设计4℃和0℃的发酵温度,密封发酵,分别取3,4,5,6,7和8周的发酵样品分析。结果表明:在0℃条件下,发酵后第5周pH值出现显著下降(P<0.05),第8周NDF含量显著降低(P<0.05)。在4℃条件下,发酵第3周起pH值一直保持在4.20以下。在相同发酵时间内,4℃条件比0℃条件时的pH值显著降低(P<0.05),乳酸菌数量、乳酸产量显著提高(P<0.05),乙酸产量显著降低(P<0.05)。在低温条件下,对每克干物质添加6.63(lg CFU·g-1DM)的混合乳酸菌,可使含水量为40%的芦苇启动发酵。为保证得到优良发酵质量,发酵时间应在6周以上。
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| 关 键 词： | 温度 乳酸菌制剂 发酵时间 青贮品质 |
| 收稿时间： | 2010-11-10 |
Effects of Lactic Acid Bacteria Inoculant on the Fermentation Quality of Reed Grass(Phragmites australis Cav.Trin.ex Sterd.)at Low Temperature |
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| WANG Peng,BAI Chun-sheng,LIU Lin,CAO Bing-hai. Effects of Lactic Acid Bacteria Inoculant on the Fermentation Quality of Reed Grass(Phragmites australis Cav.Trin.ex Sterd.)at Low Temperature[J]. Acta Agrestia Sinica, 2011, 19(1): 127-131. DOI: 10.11733/j.issn.1007-0435.2011.01.022 |
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| Authors: | WANG Peng BAI Chun-sheng LIU Lin CAO Bing-hai |
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| Affiliation: | 1. College of Animal Science and Veterinary Medicine, Jilin University, Changchun, Jilin Province 130062, China;2. College of Horticulture, Shenyang Agricultural University, Shenyang, Liaoning Province 116101, China;3. Beijing Dairy Cattle Center, Beijing 100192, China;4. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China |
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| Abstract: | Effects of lactic acid bacteria inoculant(LABs) on the fermentation quality of the reed grass silage(Phragmites australis Cav.Trin.ex Sterd.) at a lower temperature level was studied.The reed grass which had 40% water was ensiled with LABs.The silages were stored at 4℃ and 0℃,and then sampled at 3,4,5,6,7 and 8 weeks for analyzing respectively.Results showed that the pH of the silages stored at 0℃ were decreased significantly(P<0.05) at 5th week.The contents of NDF(neutral detergent fiber)were decreased significantly(P<0.05) at 8th week.The pH of the silages stored at 4℃ dropped to be below 4.20 from 5th week.At the same ensiling time,the pH and the acetic acid content of the silages stored at 4℃ were significantly lower(P<0.05),and the content of lactic acid were significantly higher(P<0.05) than those stored at 0℃.At low temperature level,the reed grass silage of which moisture is 40% could start fermentation process if the 6.63(lg CFU·g-1 DM) LABs were added to every gram of DM.For getting good silage,the ensiling time should be at least 6 weeks. |
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| Keywords: | Temperature Lactic acid bacteria inoculant Fermentation time Fermentation quality |
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