Fischer Hayden, Romano Nicholas, Sinha Amit Kumar
Center of Excellence in Aquaculture and Fisheries, University of Arkansas at Pine Bluff, 1200 North University Drive, Pine Bluff, AR 71601, USA.
Insects. 2021 Apr 8;12(4):332. doi: 10.3390/insects12040332.
Nutritionally unbalanced organic waste can be converted into potential resources for animal and plant farming by culturing black soldier fly () larvae (BSFL) and prepupae (BSFP). BSFL and BSFP are rich sources of protein and lipids, while the leftover excrement called "frass" can be used as an organic fertilizer. Using readily available resources, BSFL were cultured on spent coffee, donut dough or an equal blend for 35 days. Survival, productivity, daily pupation and biochemical composition of BSFL and BSFP were measured along with the nitrogen-phosphorus-potassium values of the frass. Survival was highest in the blend compared (81%) to spent coffee (45%) or dough (24%); however, BSFL and BSFP were significantly longer and heavier from dough. Stage and food significantly influenced the protein, lipid and glycogen content of the BSFL and BSFP, which tended to be higher in the latter. While fatty acids were often significantly higher in BSFL fed spent coffee, the amino acid composition of BSFL was generally higher in dough. Frass from the blend had significantly highest nitrogen content, while potassium and phosphorus were significantly higher and lower from spent coffee, respectively. Although coffee and donut dough were suboptimal substrates for BSFL, a blend of these produced BSFL and frass that were nutritionally comparable to soybean meal and many organic fertilizers, respectively.
通过养殖黑水虻（Hermetia illucens）幼虫（BSFL）和预蛹（BSFP），营养不均衡的有机废物可以转化为动植物养殖的潜在资源。BSFL和BSFP富含蛋白质和脂质，而剩余的排泄物“虫粪”可用作有机肥料。利用现成的资源，在废咖啡、甜甜圈面团或等量混合物上养殖BSFL 35天。测量了BSFL和BSFP的存活率、生产率、每日化蛹情况以及生化组成，同时测量了虫粪的氮磷钾含量。与废咖啡（45%）或面团（24%）相比，混合物中的存活率最高（81%）；然而，来自面团的BSFL和BSFP明显更长、更重。阶段和食物显著影响BSFL和BSFP的蛋白质、脂质和糖原含量，后者往往更高。虽然喂食废咖啡的BSFL中的脂肪酸通常明显更高，但面团中BSFL的氨基酸组成总体上更高。混合物中的虫粪氮含量最高，而废咖啡中的钾含量显著更高，磷含量显著更低。尽管咖啡和甜甜圈面团对BSFL来说不是最佳底物，但这些物质的混合物产生的BSFL和虫粪在营养上分别与豆粕和许多有机肥料相当。
