Optimizing the Use of Spent Mushroom Substrate and Wet Distiller's Grains as Feed Substrates for Black Soldier Fly (Hermetia Illucens) Larvae: Implications for Frass Yield, Quality

Mao, Wei; Li, Tao; Khan, Samiullah; Li, Haiyin; Wen, Ting‐Chi; Guo, Jianjun; Yi, Tian‐Ci

doi:10.2139/ssrn.4516224

2023

DOI: 10.2139/ssrn.4516224

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Optimizing the Use of Spent Mushroom Substrate and Wet Distiller's Grains as Feed Substrates for Black Soldier Fly (Hermetia Illucens) Larvae: Implications for Frass Yield, Quality

Wei Mao

Tao Li

Samiullah Khan

et al.

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2024

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Bioconversion efficiency and chemical composition of Hermetia illucens larvae fed spent mushroom substrates

Nayak,

Rühl,

Klüber

2024

AMB Expr

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Spent mushroom substrate (SMS) is a by-product remaining after harvesting mushrooms. We evaluated the effect of substituting chicken feed with 0–100% of Pleurotus eryngii and Lentinula edodes SMS at different stocking densities (200–1000 larvae/box) on development, composition, and substrate reduction of black soldier fly (Hermetia illucens) larvae. Although the survival rate was not significantly different, feeding pure SMS led to a low growth rate. The substitution level of SMS negatively correlated with individual larval weight, total harvested biomass, larval growth rate (LGR), feed conversion ratio (FCR), substrate reduction, and waste reduction index (WRI) except for the 20% substitution. Feeding 40% SMS resulted in the highest number of prepupae. In the density experiment, the heaviest larvae (220–239 mg fresh weight) were obtained at 200 larvae/box in the 0% SMS group. The frass residue and FCR decreased with increased density. Remarkably, when feeding 20% SMS at 250 larvae/box, the harvested biomass, LGR, and FCR did not differ significantly from the 0% SMS control, whereas some of the higher densities led to a deterioration. In fact, the frass residue, substrate reduction, and WRI were even improved at 250 larvae/box in the 20% SMS group. The chemical analyses of larvae reared on 20% SMS at 250 larvae/box showed comparable ash and fat contents and a higher protein content compared to the 0% SMS group. Accordingly, up to 20% of a standard diet such as chicken feed can be replaced by low-cost SMS without disadvantages for breeding.

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Bioconversion efficiency and chemical composition of Hermetia illucens larvae fed spent mushroom substrates

Nayak,

Rühl,

Klüber

2024

AMB Expr

View full text Add to dashboard Cite

show abstract

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Optimizing the Use of Spent Mushroom Substrate and Wet Distiller's Grains as Feed Substrates for Black Soldier Fly (Hermetia Illucens) Larvae: Implications for Frass Yield, Quality

Cited by 1 publication

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Bioconversion efficiency and chemical composition of Hermetia illucens larvae fed spent mushroom substrates

Bioconversion efficiency and chemical composition of Hermetia illucens larvae fed spent mushroom substrates

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