College of Engineering and Technology, Tianjin Agricultural University, Tianjin, China.
College of Agronomy and Resource and Environment, Tianjin Agricultural University, Tianjin, China.
Waste Manag Res. 2023 Sep;41(9):1435-1444. doi: 10.1177/0734242X231160091. Epub 2023 Mar 23.
Black soldier fly larvae (BSFL) hold great promise for sustainable management of meat and bone meal (MBM), a kind of organic waste. Harvested BSFL frass can be used as soil amendment or organic fertilizer. This study evaluated the quality and microbial profile in the frass of BSFL, fed with fish MBM containing 0% (CK), 1% (T1), 2% (T2) and 3% (T3) of rice straw. Results suggested straw addition into fish MBM had no significant impacts on BSFL weight; however, straw addition remarkably affected waste reduction and conversion efficiency, as well as physicochemical properties including electric conductivity, organic matter (OM) and total phosphorus contents in frass. Fourier transform infrared analysis indicated that increasing levels of cellulose and lignin might not be fully degraded or transformed by BSFL when more straw was introduced into substrates. Straw addition had hardly significant influences on microbial richness or evenness in BSFL frass, only T3 treatment remarkably elevated the phylogenetic diversity value more than the control. , , and were the most dominant phyla. Genera , and maintained high abundances in all frass samples. Elements including OM, pH and Na were key factors in shaping the microbiological characteristics of BSFL frass. Our findings helped to understand the effects of fish MBM waste manipulation on BSFL frass qualities and contributed to the further application of BSFL frass.
黑水虻幼虫（BSFL）在可持续管理肉骨粉（MBM）方面具有巨大的潜力，MBM 是一种有机废物。收获的 BSFL 粪便可用作土壤改良剂或有机肥料。本研究评估了以 0%（CK）、1%（T1）、2%（T2）和 3%（T3）稻草添加的鱼 MBM 喂养的 BSFL 粪便的质量和微生物特征。结果表明，稻草添加到鱼 MBM 中对 BSFL 体重没有显著影响；然而，稻草添加显著影响废物减少和转化效率，以及粪便的物理化学性质，包括电导率、有机质（OM）和总磷含量。傅里叶变换红外分析表明，当更多的稻草被引入到基质中时，BSFL 可能不能完全降解或转化增加的纤维素和木质素水平。稻草添加对 BSFL 粪便中的微生物丰富度或均匀度几乎没有显著影响，只有 T3 处理显著提高了系统发育多样性值，高于对照。 、 和 是最主要的门。 、 和 等属在所有粪便样本中都保持着较高的丰度。包括 OM、pH 值和 Na 在内的元素是塑造 BSFL 粪便微生物特征的关键因素。我们的研究结果有助于了解鱼 MBM 废物处理对 BSFL 粪便质量的影响，并有助于进一步应用 BSFL 粪便。
