Effects of Low Benzoic Acid Concentrations on Growth and Substrate Utilization in Black Soldier Fly Larvae.

At 557 and 278 mg chicken feed per larva, the differences were highly significant ( p < 0.01), suggesting that these larvae developed into prepupae before all nutritional components of the feed substrate was utilized, and that benzoic acid reduced microbial degradation of the surplus feed substrate.

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At 139 and 70 mg chicken feed per larva, the BSF larvae became feed restricted before reaching the prepupal state, and the differences in SRR due to benzoic acid were much smaller and barely significant ( p = 0.04–0.05).

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