| 朱琳，董朝霞，张建国.添加菠萝皮对构树叶青贮发酵品质
及蛋白组分的影响[J].广东农业科学,2014,41(5):74-78 |
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添加菠萝皮对构树叶青贮发酵品质
及蛋白组分的影响 |
| Effects of adding pineapple residue on silage fermentation qualityand protein fractions of Broussonetia papyrifera leaves |
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| DOI： |
| 中文关键词: 构树 菠萝皮 青贮 发酵品质 蛋白质组分 |
| 英文关键词: Broussonetia papyrifera pineapple residue silage fermentation quality protein fraction |
| 基金项目:国家野十二五冶科技支撑计划项目（2011BAD18B02） |
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| 中文摘要: |
| 构树叶粗蛋白含量高，富含氨基酸、维生素和微量元素，作为一种非常规蛋白质饲料资源有着良好的应
用前景。为促进构树叶的加工利用，研究了添加菠萝皮对构树叶青贮发酵品质的影响，并利用美国康奈尔净碳水化
合物-蛋白质体系（CNCPS），对构树叶青贮前后蛋白组分的变化进行了分析。菠萝皮添加量为鲜构树叶的0%、5%、
10%、15%和20% 5个水平，室温青贮60 d。研究结果表明院构树叶缓冲能较高、可溶性碳水化合物（WSC）含量较少，
无添加青贮料其pH 值超过5.0，发酵品质差；添加菠萝皮能显著降低青贮料pH 值、增加乳酸含量，改善青贮发酵品
质；与对照相比，添加20%菠萝皮的青贮料其氨态氮和pH 值含量最低，WSC 含量和乳酸乙酸比最高，无丁酸产生，
青贮发酵品质最好；不添加菠萝皮的构树叶经青贮发酵，约30%的可溶性真蛋白被降解为非蛋白氮，青贮后构树叶
的PA、PC 组分显著增加，而PB3组分显著低于青贮前；菠萝皮原料较构树叶原料含有较高的PA 组分，随着菠萝皮
添加量的增加，各添加组青贮料PA 含量均显著增加。添加菠萝皮虽然能改善构树叶青贮发酵品质，但添加量不宜过
高，否则影响构树叶青贮饲料的营养价值。 |
| 英文摘要: |
| The leaves of Broussonetia papyrifera are rich in protein, amino acids, vitamins and trace elements. They
have great development potential as unconventional protein resources. To promote the further utilization of B. papyrifera as
feed, this experiment was carried out to evaluate the effects of adding pineapple residue on fermentation quality and protein
fractions of silages of B. papyrifera leaves using the Cornell Net Carbohydrate and Protein System (CNCPS). The experiment
wed single factor method designed with different addition rates (0, 5%, 10%, 15% and 20% fresh weight of pineapple
residue) and the silages were kept for 60 d at room temperature. The results showed that B. papyrifera leaves contained
higher buffering capacity and a few water soluble carbohydrates, the silage without pineapple residue had poor quality with
a high pH beyond 5.0. As the addition rate of pineapple residue was increased, the silage pH was significantly reduced and
the lactic acid content significantly increased . Compared with the control, the silage added with 20% pineapple residue
had the best fermentation quality. After ensiling, about 30% true protein in the leaves was converted to fraction A. The
contents of fraction A and fraction C were higher than those in fresh leaves, while the fraction B3 content was lower than
that before ensiling. Because pineapple residue contains higher non-protein nitrogen than B. papyrifera leaves, adding
pineapple residue increased fraction A content in the adding ensiled forage. Adding pineapple residue can improve silage
fermentation quality of B. papyrifera leaves. But the adding level must be appropriate, otherwise it can reduce the silage
nutritional value. |
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