AHP-GRA based multi-criteria optimization of sorghum-sudangrass hybrid and alfalfa silage mixtures for enhanced quality and methane reduction

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy Pub Date : 2025-09-11 DOI:10.1016/j.biombioe.2025.108360

Ekin Sucu , Asli Ergenekon Arslan , Erdem Gulumser , Oguz Arslan

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引用次数: 0

Abstract

The objective of this study was to evaluate the effects of ensiling sorghum-sudangrass hybrid (SS) and alfalfa at varying ratios on silage quality, ruminal fermentation characteristics, and anti-methanogenic potential. Silage mixtures containing SS and alfalfa at ratios of 100:0, 75:25, 50:50, 25:75, and 0:100 (wet weight basis) were ensiled for 45 days. As the proportion of SS decreased, there was a significant linear increase in crude protein, mineral content (Ca, Mg, P), and secondary metabolites (condensed tannins and phenolics) (P < 0.01), along with a decrease in dry matter (DM), Flieg score, acid detergent fiber (ADF), neutral detergent fiber (NDF), lactate, and butyrate concentrations (P < 0.01). Increasing alfalfa inclusion linearly reduced 24-h in vitro gas production (P < 0.01), but had no effect on cumulative gas production at 96 h. To address the complex interrelationships among fermentation and nutritional parameters, grey relational analysis (GRA) was performed. The Analytic Hierarchy Process (AHP) was integrated into GRA to assign expert-weighted significance levels to each parameter. Based on the AHP-GRA model, the 75:25 SS:alfalfa mixture was identified as the optimal silage combination, displaying the lowest rumen pH, acetate, propionate, CO₂, and CH₄ concentrations (P < 0.05), and reduced proteolysis. These findings suggest that co-ensiling SS and alfalfa at a 75:25 ratio improves silage quality and mitigates enteric CH₄ emissions. However, further in vivo validation is necessary to confirm these effects under practical feeding conditions.

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基于AHP-GRA的高粱-苏草和苜蓿青贮混合料品质优化及甲烷减量研究

本试验旨在评价不同比例青贮高粱-苏丹草杂种（SS）和苜蓿对青贮品质、瘤胃发酵特性和抗产甲烷潜力的影响。分别以湿重为基础，按100:0、75:25、50:50、25:75和0:100的比例添加苜蓿和SS青贮饲料，青贮45 d。随着SS添加比例的降低，粗蛋白质、矿物质含量（Ca、Mg、P）和次级代谢产物（缩合单宁和酚类物质）呈极显著的线性升高（P < 0.01），干物质（DM）、Flieg评分、酸性洗涤纤维（ADF）、中性洗涤纤维（NDF）、乳酸盐和丁酸盐浓度呈极显著的线性降低（P < 0.01）。增加苜蓿包埋量可线性降低24 h体外产气量（P < 0.01），但对96 h的累积产气量没有影响。为了解决发酵与营养参数之间复杂的相互关系，进行了灰色关联分析（GRA）。将层次分析法（AHP）与GRA相结合，确定各参数的专家加权显著性水平。基于AHP-GRA模型，确定75:25 SS：苜蓿混合料为最佳青贮组合，瘤胃pH、乙酸、丙酸、CO2和CH4浓度最低（P < 0.05），且蛋白质水解率降低。综上所述，苜蓿与SS以75:25的比例共青贮提高了青贮品质，减少了肠道CH4排放。然而，在实际饲养条件下，还需要进一步的体内验证来证实这些效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.