A meta-analysis: Protein level of the substrate affect nutrient, macromineral, and amino acid profiles of maggot

Abstract

Protein content of the substrate affects the nutritional composition of maggot (Hermetia illucens). This study aimed to summarize and confirm a wide range of findings about the effect of substrate protein on the nutritional composition, macrominerals, and amino acids of maggot. This meta-analysis data was acquired from papers indexed by Scopus throughout the past decade. The substrate's protein concentration was used to define the fixed factor, whereas several studies were incorporated as the random factor. The selection and compilation of data followed the PRISMA-P. The high protein content of the substrate resulted in a significant (p<0.05) increase in dry matter and a decrease in neutral detergent fiber, but had no effect on macrominerals. The predominant of characteristics of essential and non-essential amino acids increase significantly (p<0.05) whenever protein quantities are added to the substrate. This finding implies that the protein content of the substrate had improvement on the nutrient composition (DM and NDF) and amino acid profiles (alanine, aspartic, arginine, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, and valine) of the maggot.