摘要
以桑枝叶和蚕沙为原料,通过添加10%固定比例麸皮,开展不同质量比桑枝叶、蚕沙、麦麸混合青贮试验。桑枝叶蚕沙不同比例混合青贮45 d后,经过感观评价以及对pH、氨态氮/总氮(NH3-N/TN)、挥发性脂肪酸含量等理化性质的比较,综合日本草地畜产协会制定的青贮饲料发酵品质V-Score评分体系及主成分综合得分结果,发现75%桑枝叶+15%蚕沙+10%麦麸青贮物pH值为3.40最低,NH3-N/TN为3.12最低,V-Score评分89.88最高,主成分分析综合得分1.06得分最高,综合评定为最佳青贮比例;蚕沙比例100%的pH值为5.21最高,NH3-N/TN为11.08,乳酸质量分数为0.17%最低,V-Score评分79.59,主成分综合得分-2.06得分最低,综合评定为失败;90%蚕沙的NH3-N/TN为13.03最高,V-Score评分67.79最低,主成分综合得分-0.46,综合评定为失败。研究结果可为蚕沙的混合青贮提供参考。
In this paper,mulberry branches,leaves and silkworm excrement added with a fixed proportion of 10%bran were used as raw materials to carry out the mixed silage experiment for different quality ratio of the components.After the mixed silage of mulberry branches,leaves and silkworm excrement were stored for 45 d,a comprehensive evaluation was obtained from the sensory evaluation,the comparison of pH,NH3-N/TN,volatile fatty acid content and other physical and chemical properties,as well as the V-Score scoring system of silage fermentation quality formulated by Japan Grassland Livestock Association and the comprehensive score of principal components.The results showed that the mixed silage with 75%mulberry leaves,15%silkworm excrement and 10%wheat bran had the best silage proportion in comprehensive evaluation,with the pH value being 3.40(the lowest),the NH3-N/TN value being 3.12(the lowest),the V-Score being 89.88(the highest)and the comprehensive score of principal components being 1.06(the highest).The mixed silage with 100%of silkworm excrement was evaluated as failure with the pH value being 5.21(the highest),the NH3-N/TN value being 11.08,the lactic acid content being 0.17%(the lowest),the V-Score being 79.59,and the comprehensive score of principal components being-2.06(the lowest).The mixed silage with 90%of silkworm excrement was also evaluated as failure with the NH3-N/TN value being 13.03(the highest),V-Score being 67.79(the lowest),and the comprehensive score of principal components being-0.46.The results can provide reference for the mixed silage of silkworm excrement.
作者
李冬兵
黄先智
刘学锋
王一
沈以红
Li Dongbing;Huang Xianzhi;Liu Xuefeng;Wang Yi;Shen Yihong(Yibin Academy of Agricultural Sciences,Sichuan Province,Yibin Sichuan 644000,China;State Key Laboratory of Silkworm Genome Biology,Chongqing 400715,China;Key Laboratory for Sericulture Functional Genomics and Biotechnology,Ministry of Agriculture and Rural Affairs,Chongqing 400715,China)
出处
《蚕业科学》
CAS
CSCD
北大核心
2021年第3期255-261,共7页
ACTA SERICOLOGICA SINICA
基金
财政部和农业农村部国家现代农业产业技术体系项目(CARS-18)
公益性行业(农业)科研专项(201403049)。
关键词
桑枝叶
蚕沙
混合青贮
青贮品质
Mulberry branch and leaf
Silkworm excrement
Mixed Silage
Silage quality
