Journal Article

Utilization of agro-industrial residues in the rearing and nutritional enrichment of Zophobas atratus larvae: new food raw materials

PEDRO PAULO LORDELO GUIMARÃES TAVARES, UNIVERSIDADE FEDERAL DA BAHIA, LINDE, G. A, LEMOS, P. V. F, NELSON BARROS COLAUTO, UNIVERSIDADE FEDERAL DA BAHIA, MACHADO, B. A. S, COLAUTO, N. B, ALINE TELLES BIASOTO MARQUES, CNPMA, EDERLAN DE SOUZA FERREIRA, UNIVERSIDADE FEDERAL DA BAHIA, BIASOTO, A. C. T, PAULO VITOR FRANÇA LEMOS, UNIVERSIDADE FEDERAL DA BAHIA, NASCIMENTO, R. Q, SILVA, J. B. A. DA, JANIA BETÂNIA ALVES DA SILVA, UNIVERSIDADE FEDERAL DO RECÔNCAVO DA BAHIA, CARVALHO, N, TAVARES, P. P. L. G, GIANI ANDREA LINDE, UNIVERSIDADE FEDERAL DA BAHIA, GUEZ, M. A. U, RIBEIRO, C. V. D. M, CAROLINA OLIVEIRA DE SOUZA, UNIVERSIDADE FEDERAL DA BAHIA, ASSIS, D. DE J, NATÁLIA CARVALHO, UNIVERSIDADE FEDERAL DA BAHIA, SOUZA, C. O. DE, BRUNA APARECIDA SOUZA MACHADO, SENAI, MARCELO ANDRES UMSZA GUEZ, UNIVERSIDADE FEDERAL DA BAHIA, FERREIRA, E. DE S, RENATA QUARTIERI NASCIMENTO, UNIVERSIDADE FEDERAL DA BAHIA, LARISSA DA SILVA, UNIVERSIDADE FEDERAL DA BAHIA, DENÍLSON DE JESUS ASSIS, UNIVERSIDADE FEDERAL DA BAHIA, CLÁUDIO VAZ DI MAMBRO RIBEIRO, UNIVERSIDADE FE

2022

Overview

Abstrcat: Edible insects are a potential alternative food source of high feed conversion efficiency and protein content. Zophobas atratus is an edible insect that adapts to different diets, enabling sustainable rearing by adding value to by-products and agro-industrial residues. This study aimed to evaluate the performance and nutritional characterization of Zophobas atratus larvae fed with different proportions of grape residue. Physicochemical analysis of the diets and larvae (AOAC procedures), fatty acid profile (chromatographic techniques), metals and non-metals (inductively coupled plasma optical emission spectrometry), larval mass gain, feed conversion efficiency, and mortality rate were assessed. The replacement of 25% of the conventional diet with grape residue increased lipid, ash, and fiber contents and reduced protein, carbohydrates, and energy. It promoted greater mass gain, lower mortality rate, and reduced larval growth time by 51%. Among the replacements, 25% resulted in the second-highest content of calcium, sodium, magnesium, and zinc, and the lowest content of potassium and phosphorus in the larvae. The 100% replacement resulted in the highest amounts of C18:2n6 (27.8%), C18:3n3 (2.2%), and PUFA (30.0%). Replacing 25% of the conventional diet with grape residue is equivalent to the conventional diet in many aspects and improves several larvae performance indices and nutritional values.