发酵抑制剂对青贮醉马芨芨草脱毒效果的影响评价

发布时间：2019-02-17 12:36

【摘要】：以结实期醉马芨芨草全株为原料,设置甲酸、山梨酸钾、苯甲酸钠、丙酸、丙酸钠和对照6个处理,青贮60d,测定其有毒生物碱和营养成分;应用灰色关联度分析法以有毒生物碱及营养成分含量8个指标为依据,综合评价不同发酵抑制剂对醉马芨芨草脱毒效果的影响。结果表明,在添加不同发酵抑制剂的同时,对醉马芨芨草进行青贮,其麦角酰胺和麦角新碱含量均表现出一定程度的降低,降解率分别为2.10%~5.42%、39.35%~45.17%;而营养成分中钙含量降低最为明显,降低范围在21.15%~44.46%之间,干物质含量次之,粗蛋白和粗脂肪变化较小。综合评价得出,各处理脱毒效果由强到弱依次是W4W3W1CKW5W2,添加丙酸(W4)是降解毒性的较好方法,苯甲酸钠(W3)次之。因此,在青贮脱毒醉马芨芨草时,推荐添加0.2%丙酸或0.1%苯甲酸钠作为青贮添加剂。
[Abstract]:The toxic alkaloids and nutritional components of Achnatherum splendens during fruiting period were determined by six treatments of formic acid, potassium sorbate, sodium benzoate, sodium propionate and control for 60 days. Based on 8 indexes of toxic alkaloids and nutritive components, the effects of different fermentation inhibitors on the detoxification of Achnatherum splendens were evaluated by grey correlation analysis. The results showed that when different fermentation inhibitors were added, the contents of ergozamide and ergoxin in the silage of Achnatherum splendens were decreased to some extent, and the degradation rates were 2.10% and 5.42%, respectively. 39.35 and 45.17; However, the calcium content in the nutrient component was the most obvious, and the decrease range was between 21.15% and 44.46%, followed by the dry matter content, and the change of crude protein and crude fat was small. Comprehensive evaluation showed that the detoxification effect of each treatment was W4W3W1CKW5W2, adding propionic acid (W4) was the better method of degradation toxicity, sodium benzoate (W3) was the second. Therefore, it is recommended that 0.2% propionic acid or 0.1% sodium benzoate be added as silage additive in the silage detoxification of Achnatherum splendens.
【作者单位】：新疆农业大学草业与环境科学学院/新疆草地资源与生态重点实验室;
【基金】：公益性行业(农业)科研专项“草原主要毒害草发生规律及防控技术研究(201203062)”
【分类号】：S816

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