| 添加剂对高丹草青贮效果的影响 |
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| 引用本文： | 冀旋,玉柱,白春生,顾雪莹,郭艳萍.添加剂对高丹草青贮效果的影响[J].草地学报,2012,20(3):571-575. |
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| 作者姓名： | 冀旋 玉柱 白春生 顾雪莹 郭艳萍 |
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| 作者单位： | 中国农业大学草地研究所, 北京 100193 |
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| 基金项目： | 国家牧草产业技术体系项目 |
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| 摘 要： | 以高丹草(Sorghum bicolor×Sorghum sudanense)为原料,分别添加乙酸(0.5%,AA)、丙酸(0.5%,PA)、丙酸(0.5%)+尿素(0.5%,U)混合试剂、乳酸菌菌剂snow LACT-JL(0.0005%,SL)及乳酸菌菌剂acremo conc.(0.0017%,AC)共5个处理调制青贮,分析发酵品质、营养成分和不饱和脂肪酸含量,以确定有利于高丹草青贮的添加剂。结果表明:高丹草单独青贮时pH值达4.95,氨态氮占全氮比例高达16.85%,营养物质损失大,青贮效果不理想。添加AA,PA,PA+U和乳酸菌菌剂AC后,高丹草青贮的pH值显著低于对照组(P<0.05),5种添加剂处理均能显著提高粗蛋白含量并降低氨态氮占全氮比例(P<0.05),可使高丹草青贮的发酵品质和营养价值得到改善。各处理中高丹草青贮料的亚麻酸含量均高于亚油酸含量,各添加剂均可显著提高亚麻酸和亚油酸含量(P<0.05),其中乳酸菌菌剂AC提高亚油酸和亚麻酸含量的效果最明显。
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| 关 键 词： | 高丹草 添加剂 青贮 青贮品质 |
| 收稿时间： | 2011-11-14 |
Effect of Additives on Quality of Sorghum-Sudangrass Hybrids Silage |
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| JI Xuan
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YU Zhu
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BAI Chun-sheng
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GU Xue-ying
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GUO Yan-ping.Effect of Additives on Quality of Sorghum-Sudangrass Hybrids Silage[J].Acta Agrestia Sinica,2012,20(3):571-575. |
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| Authors: | JI Xuan YU Zhu BAI Chun-sheng GU Xue-ying GUO Yan-ping |
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| Institution: | Institute of Grassland Science, China Agriculture University, Beijing 100193, China |
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| Abstract: | Sorghum-Sudangrass hybrids were ensiled after treated with acetic acid(0.5%,AA),propionic acid(0.5%),propionic acid(0.5%) and urea(0.5%) mixture,snow LACT-JL(0.0005%,SL) and acremo conc.(0.0017%,AC).Fermentation qualities,chemical compositions and poly unsaturated fatty acids of silage were analyzed to determine additives contributing to Sorghum-Sudangrass hybrids silage.Results showed that Sorghum-Sudangrass hybrids silage without additives had 4.95 pH value and 16.85% ammonia nitrogen/total nitrogen ratio,which were not qualified with nutrition largely lost.However,pH value of silage was significantly reduced after adding AA,PA,PA+U,AC(P<0.05).All tested additives could significantly increase crude protein concentration and decrease ammonia nitrogen/total nitrogen ratio(P<0.05),then improve fermentation qualities and nutritional value of silage compared with control.All tested additives could significantly increase linoleic acid and linolenic acid concentration(P<0.05),in which AC had the most obvious effect on increasing linoleic acid and linolenic acid concentration. |
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| Keywords: | Sorghum-Sudangrass hybrids Additives Silage Silage quality |
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