Silage from agricultural by-products in Thailand: Processing and Storage
Silage from agricultural by-products in Thailand: Processing and Storage
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DOI：
10.5713/ajas.2004.473
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发表时间：
2004-04-01
期刊：
影响因子：
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通讯作者：
Lounglawan, P
中科院分区：
文献类型：
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作者：
Suksombat, W;Lounglawan, P
通过两个实验研究了农副产品青贮饲料的加工和储存。第一个实验是为了研究不同青贮时间的各种青贮饲料的化学成分和降解性。该实验采用 5x3 因子设计，完全随机，因子 A 为通过不同尿素添加水平（0、0.5、1.0、1.5 和 2.0%）配制的不同混合物，因子 B 为青贮时间。化学成分随时间变化很小，并且随混合物中尿素含量的变化也略有变化。干物质 (DM) 降解性随着木薯含量的增加而增加，而粗蛋白降解性和 pH 水平则随着尿素添加量的增加而增加。通过使用与有机酸产量相关的“Flieg点”，青贮混合物和青贮时间之间没有显着差异。因此可以得出结论，第5种青贮饲料配方是最合适的，因为它的DM和粗蛋白（CP）降解率最高。第二个实验是为了确定第 5 种青贮饲料混合物（来自上一次试验）在储存长达 6 个月后的质量。该实验采用完全随机设计，每隔 6 个月每月取样一次，并进行实验室和可降解性分析。结果显示，除了中性洗涤纤维和酸性洗涤纤维百分比随储存时间增加而增加外，化学成分没有显着差异（p>0.05）。不同储存时间的“Flieg 点”没有显着性差异 (p>0.05)。总之，本实验表明，青贮饲料来自于农副产品。可保存6个月以上。
Processing and storage of the silage from agricultural by-products were studied in two experiments. The first experiment was conducted to investigate the chemical composition and degradability of various silages with varying ensiling times. The experiment was a 5x3 factorial design, completely randomized, with factor A as the different formulated mixtures by varying level of urea addition (0, 0.5, 1.0, 1.5 and 2.0%) and factor B as the time of ensiling. Chemical composition changed little with time and varied only slightly with levels of urea in the mixtures. Dry matter (DM) degradability increased with increasing cassava levels while crude protein degradability and pH level increased with increasing urea addition. By using 'Flieg point', which relates to organic acid yields, there were no significant difference among ensiled mixtures and times of ensiling. Therefore it can be concluded,that the 5th silage formulation is the most appropriate since its DM and crude protein (CP) degradability were highest. The second experiment was carried out to determine the quality of the 5th silage mixtures (from the previous trial) after being stored for up to 6 months. The experiment was a complete randomized design with samples taken at monthly intervals up to 6 months and subjected to laboratory and degradability analyses. The results showed no significant (p>0.05) difference in chemical composition except for increased neutral detergent fiber and acid detergent fiber percentage in association with increasing storage time. There were no significant (p>0.05) differences in 'Flieg point' among times of storage. In conclusion, this experiment showed that the silage from agricultural by-products. can be stored for more than 6 months.