多花黑麦草与大豆秸秆混合青贮发酵品质的研究

doi:10.11686/cyxb20140411

摘要/Abstract

摘要： 本研究旨在将多花黑麦草与大豆秸秆以不同比例混合青贮,评价其发酵品质,筛选出适宜的混合比例。试验设多花黑麦草与大豆秸秆的混合比例为10∶0(对照组)、9∶1 (S₁)、8∶2 (S₂)、7∶3(S₃)和6∶4(S₄)5个处理。青贮42 d后打开青贮桶,测定青贮饲料的发酵品质。结果表明,多花黑麦草与大豆秸秆混合青贮显著提高了干物质含量,降低了挥发性脂肪酸含量和氨态氮/总氮的值,其中S₂和S₃处理的丁酸和氨态氮/总氮值最低。V-Score 评分显示各混贮组的V-Score 得分均高于对照组,其中S₂和S₃处理的发酵品质为优等,而对照组的发酵品质为不良。从发酵品质和秸秆利用最大化的角度出发,建议将多花黑麦草和大豆秸秆以7∶3的比例混合青贮较为适宜。

Abstract: The mixed fermentation quality of Italian ryegrass (Lolium multiflorum) and soybean (Glycine max) straw was studied through the following proportions of 10∶0 (Control),9∶1 (S₁),8∶2 (S₂),7∶3 (S₃) and 6∶4 (S₄). The silos for each mixture were opened on 42 d after ensiling and the fermentation quality was measured. The results showed that the dry matter content was increased significantly,but the NH₃-N to total nitrogen (TN) ratio and the content of volatile fatty acids were significantly decreased by adding soybean straw. The butyric acid content and NH₃-N to TN ratio were decreased markedly in the treatment of S₂ and S₃. The V-Scores were higher as compared with the control,S₂ and S₃ treatment indicated good fermentation quality. It was suggested that the 7∶3 mixed proportions of Italian ryegrass and soybean straw was best for improving fermentation quality and maximum using soybean straw.

中图分类号:

S816.5⁺3

闫艳红，李君临，郭旭生，玉柱，张新全，孙娟娟，罗燕. 多花黑麦草与大豆秸秆混合青贮发酵品质的研究[J]. 草业学报, 2014, 23(4): 94-99.

YAN Yan-hong,LI Jun-lin,GUO Xu-sheng,YU Zhu,ZHANG Xin-quan,SUN Juan-juan,LUO Yan. A study on fermentation quality of Italian ryegrass and soybean straw mixed silage[J]. Acta Prataculturae Sinica, 2014, 23(4): 94-99.

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