首页> 外文期刊>Grassland Science >Effect of Lactobacillus plantarum 'KR107070' and a propionic acid-based preservative on the fermentation characteristics, nutritive value and aerobic stability of alfalfa-corn mixed silage ensiled with four ratios
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Effect of Lactobacillus plantarum 'KR107070' and a propionic acid-based preservative on the fermentation characteristics, nutritive value and aerobic stability of alfalfa-corn mixed silage ensiled with four ratios

机译:植物杆菌'KR107070'的影响及基于丙酸的防腐剂对苜蓿玉米混合青贮组成的发酵特征,营养价值和有氧稳定性

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The effect of Lactobacillus plantarum KR107070' and a propionic acid-based preservative on the quality and aerobic stability of alfalfa-corn mixed silage ensiled with four ratios was evaluated. A 4x4 factorial arrangement was used in a completely randomized design in this study. The chopped alfalfa and corn were made into four alfalfa to corn ratios (containing 20, 40, 60 and 80% corn), each of which was treated with (i) distilled water; (ii) 1x10(6) colony forming units per g of L.plantarum KR107070'; (iii) a chemical additive consisting of 0.24% propionic acid, 0.24% sodium propionate and 0.18% formic acid; (iv) a combination of (ii) and (iii). Treated forages mixture was ensiled with triplicate in a 5-L polythene bucket for 180days. At silo opening, the fermentation characteristics of silage were enhanced with a lower pH value, higher lactic acid content and lower ammoniacal nitrogen concentration and its relative feed value decreased, with a higher ratio of corn for all treatments. The application of a chemical additive alone, or in combination with L.plantarum KR107070', decreased ammoniacal nitrogen concentrations and increased water soluble carbohydrates contents than control or L.plantarum KR107070' for each silage of four ratios, in addition to enhancing the aerobic stability of 60 and 80% corn silages compared to L.plantarum KR107070'. The 60% corn silage, treated with combining 0.24% propionic acid, 0.24% sodium propionate and 0.18% formic acid with L.plantarum KR107070', is better in terms of conservation quality and aerobic stability.
机译:评价乳酸杆菌KR107070'的效果和基于丙酸的耐受性对苜蓿玉米混合青贮组成的质量和有氧稳定性的影响,得到了四个比例。在本研究中的完全随机设计中使用了4x4因子的安排。将切碎的苜蓿和玉米成四个苜蓿,玉米比(含有20,40,60和80%玉米),每种用(I)蒸馏水处理; (ii)每g的1x10(6)菌落形成单位L.Plantarum KR107070'; (iii)由0.24%丙酸,0.24%丙酸钠和0.18%甲酸组成的化学添加剂; (iv)(ii)和(iii)的组合。在5-L聚乙烯桶中,将处理过的脱脂剂混合物在5-L聚乙烯桶中含有三份。在筒仓开放时,利用较低的pH值,较高的乳酸含量和较低的氨氮浓度,并且其相对进料值下降,玉米的所有治疗比较较高。单独使用化学添加剂,或与L.PlantarumKR107070'的组合,减少氨氮浓度,每种青贮饲料或L.Plantarum KR107070'的水溶性碳水化合物含量增加,除了提高好氧稳定性之外与L.Plantarum KR107070'相比,60和80%的玉米酸盐。通过组合0.24%丙酸,0.24%丙酸钠和0.18%甲酸与L.Plantarum KR107070'进行的60%玉米青贮饲料,在保护质量和有氧稳定性方面更好。

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