不同处理方式对籽粒苋青贮品质的影响

发布时间：2018-05-22 08:31

本文选题：籽粒苋 + 青贮添加剂　；参考：《草业学报》2017年09期

【摘要】：试验以籽粒苋为材料,在青贮中分别添加乳酸菌制剂、葡萄糖和甲酸3种添加剂,研究不同的处理方式对籽粒苋青贮动态发酵品质以及营养成分的影响,以明确青贮添加剂对粒苋青贮的作用,为籽粒苋青贮饲料的合理利用提供研究途径。试验设5个处理组:对照组,不加任何添加剂;乳酸菌制剂组,按1kg乳酸菌制剂调制3~4t籽粒苋鲜草装罐;葡萄糖组,添加量为30g/kg;乳酸菌制剂和葡萄糖组,添加量与单独添加时一致;甲酸组,添加量为5g/kg。在发酵第1,3,9,30和57天分别开罐取样,检测样品中pH、乳酸、氨态氮、干物质、粗蛋白和中性洗涤纤维等指标。结果表明,在籽粒苋青贮同时加入乳酸菌制剂和葡萄糖可以快速发酵,产生大量乳酸,迅速降低青贮pH值,显著降低乙酸、中性洗涤纤维含量和氨态氮/总氮(P0.05),并能显著提高干物质和粗蛋白含量(P0.05);加入甲酸可以显著降低乙酸含量(P0.05),对干物质含量没有明显影响(P0.05)。综上所述,籽粒苋通过制作青贮饲料可以保存营养成分,与籽粒苋自然青贮相比,籽粒苋青贮时加入上述青贮添加剂均可不同程度的改善青贮品质,同时加入乳酸菌和葡萄糖对青贮改善效果最佳。
[Abstract]:Three additives, lactic acid bacteria, glucose and formic acid, were added to the silage to study the effects of different treatments on the dynamic fermentation quality and nutrient components of the silage. In order to clarify the effect of silage additive on amaranth silage, this paper provides a research approach for the rational utilization of grain amaranth silage. The experiment was divided into five treatment groups: control group, without any additive; lactic acid bacteria preparation group, which was prepared with 1kg lactic acid bacteria preparation, 3 ~ 4t fresh amaranth pot; glucose group, 30 g / kg; lactic acid bacteria preparation and glucose group; In the formic acid group, the addition amount was 5 g / kg. The pH, lactic acid, ammonia nitrogen, dry matter, crude protein and neutral washing fiber were detected at 30 and 57 days after fermentation. The results showed that lactic acid bacteria and glucose could be added to the silage of amaranth seed at the same time to produce a large amount of lactic acid and reduce the pH value of the silage and acetic acid significantly. The content of neutral detergent fiber and ammonia nitrogen / total nitrogen can increase the content of dry matter and crude protein, and the addition of formic acid can significantly reduce the content of acetic acid and P0.05N, but have no effect on the content of dry matter. In conclusion, grain amaranth can preserve nutrient components by making silage. Compared with natural silage, grain amaranth silage can improve the quality of silage by adding the above-mentioned silage additives to different extent. The effect of lactic acid bacteria and glucose on silage improvement was the best.
【作者单位】：新疆农业大学动物科学学院;中国农业大学动物科技学院;
【基金】：“现代农业(奶牛)产业技术体系建设专项资金”(CARS-37) 新疆农业大学大学生创新项目平台资助
【分类号】：S816.53

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