Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; Key Laboratory of Crop and Livestock Integration, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China.
Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China.
Bioresour Technol. 2024 Nov;412:131379. doi: 10.1016/j.biortech.2024.131379. Epub 2024 Aug 29.
Initiating aerobic fermentation under low temperature is the main challenge for winter livestock manure composting. This study aims to address this issue by applying black soldier fly larvae (BSFL) frass as a co-composting additive to enhance the low-temperature composting process. Specifically, this work explored the effects of chicken manure and BSFL frass co-composting on the temperature, humus content, and microorganisms with fresh weight ratio of 2:1, 1:1, 1:2 (w/w) at 6 °C. The result showed frass could rapidly rise the temperature to 50 °C and significantly increased the humus content by 15.6 % ∼ 26.3 %. Moreover, microbial analysis revealed that Sphingobacteriaceae accelerated temperature rise via low-temperature reproduction, creating proper temperature for thermophilic bacteria (Truepera and Georgia). Additionally, Cellulomonas and other bacteria promoted organic matter degradation and participated in humus formation. This study presents a novel solution for low-temperature composting, providing practical insights for improving manure management in winter.
在低温下启动需氧发酵是冬季牲畜粪便堆肥的主要挑战。本研究旨在通过应用黑水虻幼虫（BSFL）粪便作为共堆肥添加剂来解决这个问题，以增强低温堆肥过程。具体来说，这项工作探索了鸡粪和 BSFL 粪便以新鲜重量比为 2:1、1:1、1:2（w/w）在 6°C 下共堆肥对温度、腐殖质含量和微生物的影响。结果表明，粪便可以迅速将温度升高到 50°C，并显著增加腐殖质含量 15.6%∼26.3%。此外，微生物分析表明，鞘脂杆菌科通过低温繁殖加速了温度上升，为嗜热菌（Truepera 和 Georgia）创造了适宜的温度。此外，纤维单胞菌和其他细菌促进了有机质的降解，并参与了腐殖质的形成。本研究为低温堆肥提供了一种新的解决方案，为冬季改善粪便管理提供了实用的见解。
