Hubei Key Laboratory of Insect Resource Application and Sustainable Pest Control, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, China.
Department of Biological Sciences, Faculty of Science, University of Ngaoundere, P.O Box 454, Ngaoundere, Cameroon.
Environ Sci Pollut Res Int. 2019 Oct;26(28):29388-29396. doi: 10.1007/s11356-019-06101-1. Epub 2019 Aug 9.
Crop straw is an abundant renewable resource whose usage is limited due to its high cellulose, hemicellulose, and lignin contents. Here, Trichoderma viride, Saccharomyces cerevisiae, and Musca domestica were used to transform crop straws, and we investigated their impact on housefly rearing performance and optimized their utilization. The weights of cellulose, hemicellulose, and lignin in fermented crop straw diets significantly decreased after bioconversion by M. domestica larvae. The highest bioconversion rate was recorded in corn straw diet (16.19%), followed by wheat straw diet (10.31%) and wheat bran diet (8.97%). Similarly, high larval weight (yield) and pupation rate and fecundity and fertility rate were recorded in fermented crop straw diets composed of corn straw and wheat bran in 1:1 proportions. These results indicated that fermenting crop straw with T. viride and S. cerevisiae represented an efficient strategy that enhanced crop straw bioconversion and improved the rearing capacity of the housefly larvae. The resulting larvae could further be used as proteinaceous feed in poultry and aquaculture industries. Graphical abstract.
农作物秸秆是一种丰富的可再生资源，但由于其纤维素、半纤维素和木质素含量高，其利用率受到限制。本研究采用绿色木霉、酿酒酵母和家蝇对农作物秸秆进行转化，并优化了其利用方式。家蝇幼虫的生物转化显著降低了发酵农作物秸秆饲料中纤维素、半纤维素和木质素的含量。在玉米秸秆饲料中的生物转化率最高（16.19%），其次是小麦秸秆饲料（10.31%）和麦麸饲料（8.97%）。同样，在由玉米秸秆和麦麸以 1:1 比例组成的发酵农作物秸秆饲料中，记录到了较高的幼虫体重（产量）、化蛹率和产卵率及受精率。这些结果表明，用绿色木霉和酿酒酵母发酵农作物秸秆是一种有效的策略，可以提高农作物秸秆的生物转化效率，同时提高家蝇幼虫的饲养能力。所得的幼虫可进一步作为高蛋白饲料用于家禽和水产养殖业。图摘要。
