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    王益, 王学凯, 周玮, 等. 含水量及添加剂对黄梁木叶青贮品质的影响[J]. 华南农业大学学报, 2018, 39(4): 80-86. DOI: 10.7671/j.issn.1001-411X.2018.04.013
    引用本文: 王益, 王学凯, 周玮, 等. 含水量及添加剂对黄梁木叶青贮品质的影响[J]. 华南农业大学学报, 2018, 39(4): 80-86. DOI: 10.7671/j.issn.1001-411X.2018.04.013
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    WANG Yi, WANG Xuekai, ZHOU Wei, YANG Fuyu, ZHANG Qing, CHEN Xiaoyang. Effects of moisture content and additive on silage quality of Neolamarckia cadamba leaves[J]. Journal of South China Agricultural University, 2018, 39(4): 80-86. DOI: 10.7671/j.issn.1001-411X.2018.04.013
    Citation: WANG Yi, WANG Xuekai, ZHOU Wei, YANG Fuyu, ZHANG Qing, CHEN Xiaoyang. Effects of moisture content and additive on silage quality of Neolamarckia cadamba leaves[J]. Journal of South China Agricultural University, 2018, 39(4): 80-86. DOI: 10.7671/j.issn.1001-411X.2018.04.013
    shu

    含水量及添加剂对黄梁木叶青贮品质的影响

    Effects of moisture content and additive on silage quality of Neolamarckia cadamba leaves

      摘要
    • 摘要:
      目的  探讨不同含水量及添加剂对黄梁木Neolamarckia cadamba叶青贮发酵品质的影响。
      方法  以黄梁木叶为原料，晾晒至含水量(w)为80%和70%，每个含水量条件下分别添加甲酸(FA，3 g·kg–1)、植物乳杆菌Lactobacillus plantarum (LP，1×106 cfu·g–1)、壮乐美青贮发酵剂(ZLM，0.005 g·kg–1)，并以不使用添加剂为对照(CK)进行青贮。
      结果  黄梁木叶干物质中粗蛋白含量(w)为22.89%，中性洗涤纤维和酸性洗涤纤维含量(w)分别为32.84%和24.91%。含水量对黄梁木叶青贮品质有显著影响，随着含水量的降低，黄梁木叶青贮饲料的干物质和可溶性碳水化合物含量极显著增加(P<0.01)，pH极显著降低(P<0.01)。2种含水量条件下，LP和ZLM处理的pH极显著低于CK(P<0.01)。在含水量(w)为70%条件下，2种乳酸菌剂均极显著降低了酵母菌数量(P<0.01)，在含水量(w)为80%条件下，FA处理的可溶性碳水化合物含量极显著高于CK和其他处理(P<0.01)。所有处理的大肠埃希菌数量(cfu·g–1)的对数均小于2.0，且未检测到丁酸，w(NH4+-N)/w(TN)均低于10%。
      结论  黄梁木叶具有较高饲用价值且易于调制青贮饲料，适当降低含水量和添加剂可在一定程度上改善黄梁木叶的青贮发酵品质。

       

      Abstract:
      Objective  To investigate the effects of different moisture contents and additives on ensiling fermentation qualities of Neolamarckia cadamba leaves.
      Method  The N. cadamba leaves were used as raw materials, and air-cured until the moisture contents (w) were 80% and 70% respectively. The ensiling processes were conducted through adding formic acid (FA, 3 g·kg–1), Lactobacillus plantarum (LP, 1×106 cfu·g–1) and Zhuanglemei silage starter (ZLM, 0.005 g·kg–1) to each moisture content treatment. The treatment without additive was counted as the control (CK).
      Result  The crude protein content (w) of N. Cadamba leaves without air-curing before ensiling was 22.98%, and the neutral and acid detergent fiber contents (w) were 32.84% and 24.91% respectively. The moisture content had significant effects on silage qualities of N. cadamba leaves. With the decrease of moisture content, the dry matter and water soluble carbohydrate contents increased extremely significantly (P<0.01), pH decreased extremely significantly (P<0.01). Under the two moisture contents, the pH of the treatments adding LP and ZLM were extremely significantly lower than CK (P<0.01). While the moisture content was 70%, twolactobacillus starters (LP and ZLM) extremely significantly reduced the numbers of yeast (P<0.01). The water soluble carbohydrate content in the treatment adding FA under 70% moisture content was extremely significantly higher than those in CK and other treatments (P<0.01). The logarithm values ofEscherichia coli numbers in all treatments were less than 2.0, no butyric acid was detected, and all rations of w(NH4+-N) to w(TN) were below 10%.
      Conclusion  N. cadamba leaves have high feeding value and are liable to produce silage. Reducing moisture content properly and applying additives can partly improve the ensiling fermentation qualities of N. cadamba leaves.

       

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