Dietary supplementation of black soldier fly ( <i>Hermetica illucens)</i> meal modulates gut microbiota, innate immune response and health status of marron ( <i>Cherax cainii</i> , Austin 2002) fed poultry-by-product and fishmeal based diets

The present study aimed to evaluate the dietary supplementary effects of black soldier fly ( Hermetia illucens ) (BSF) meal on the bacterial communities in the distal gut, immune response and growth of freshwater crayfish, marron ( Cherax cainii ) fed poultry-by-product meal (PBM) as an alternative protein source to fish meal (FM). A total of 64 marron were randomly distributed into 16 different tanks with a density of four marron per tank. After acclimation, a 60-days feeding trial was conducted on marron fed isonitrogenouts and isocalorific diets containing protein source from FM, PBM, and a combination of FM + BSF and PBM + BSF. At the end of the trial, weight gain and growth of marron were found independent…