The effect of different additives on the fermentation quality, aerobic stability and in vitro digestibility of pea/wheat bi-crop silages containing contrasting pea to wheat ratios
The effect of different additives on the fermentation quality, aerobic stability and in vitro digestibility of pea/wheat bi-crop silages containing contrasting pea to wheat ratios
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DOI：
10.1046/j.1365-2494.2002.00298.x
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发表时间：
2002-03-01
影响因子：
2.4
通讯作者：
Salawu, MB
中科院分区：
文献类型：
--
作者：
Adesogan, AT;Salawu, MB
研究比较了亚硫酸盐添加剂甲酸和木单宁两种微生物接种剂对豌豆/小麦双季青贮料的发酵品质、营养价值和有氧稳定性的影响。春豌豆(Pisum sativum var.)Magnus)和春小麦(Triticum aestivum var.Axona)以高(HP/W；3：1)或低(LP/W；1：3)豌豆与小麦的比率一起钻探。豌豆和小麦分别在黄皱荚和乳后期/面团成熟期收获，保存在1.5公斤的聚乙烯袋中，实验室筒仓。两种作物在未经处理(对照)的情况下保存，或使用两种以乳酸菌为基础的接种剂[布氏乳杆菌；以10(5)个菌落单位(CFU)g(-1)鲜重(FW)或植物乳杆菌(以10(6)CFU g(-1)FW)]、亚硫酸盐(以1毫升亚硫酸盐溶液kg(-1)FW)、七叶树单宁(以16 g kg(-1)FW)和甲酸(以2.5 g kg(-1)FW)施用量中的任何一个进行处理。每个处理6个重复，在青贮112天后打开筒仓。豌豆在复种作物中的含量影响添加剂的效果。除亚硫酸盐外，所有添加剂均显著降低了青贮料的可溶性氮(N)和氨氮浓度。LP/W青贮料的乳酸/醋酸比值普遍低于HP/W青贮料，添加处理仅增加了LP/W青贮料干物质中的体外可消化有机物。在所评价的所有添加剂中，甲酸在HP/W双季青贮料中的好氧腐败程度最低。然而，在LP/W两熟作物中，不需要添加处理来确保好氧稳定性。
Studies were conducted to compare the effects of using two microbial inoculants, a sulphite salt-based additive, formic acid and quebracho tannins, on the fermentation quality, nutritive value and aerobic stability of pea/wheat bi-crop silages. Spring peas (Pisum sativum var. Magnus) and spring wheat (Triticum aestivum var. Axona) were drilled together at rates that gave high (HP/W; 3:1) or low (LP/W; 1:3) pea to wheat ratios. The peas and wheat were harvested at the yellow wrinkled pods and late milk/early dough maturity stage, respectively, and conserved in 1.5-kg polyethylene bag, laboratory silos. The bi-crops were conserved without treatment (control) or treated with either of two lactic acid bacteria-based inoculants [Lactobacillus buchneri ; applied at 10(5) colony-forming units (CFU) g(-1) fresh weight (FW) or Lactobacillus plantarum (applied at 10(6) CFU g(-1) FW)], sulphite salts (applied at the rate of 1 ml sulphite solution kg(-1) FW), quebracho tannins (applied at 16 g kg(-1) FW) and formic acid (applied at 2.5 g kg(-1) FW). Six replicates were made for each treatment, and the silos were opened after 112 days of ensilage. The level of peas in the bi-crop influenced the effectiveness of the additives. With the exception of sulphite salts, all the additives significantly reduced the soluble nitrogen (N) and ammonia-N concentrations of all the silages. The ratio of lactic acid to acetic acid was generally lower in the LP/W silages than in the HP/W silages, and the additive treatments only increased the in vitro digestible organic matter in dry matter of the LP/W silages. Of all the additives evaluated, formic acid resulted in the least aerobic spoilage in HP/W bi-crop silages. However, in the LP/W bi-crops, additive treatment was not necessary for ensuring aerobic stability.