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ISSN : 1225-2964(Print)
ISSN : 2287-3317(Online)
Annals of Animal Resource Sciences Vol.35 No.2 pp.46-55
DOI : https://doi.org/10.12718/AARS.2024.35.2.46

Effects of Crude Protein in Rearing Substrates on Rearing Performance and Nutrient Accumulation of Black Soldier Fly (Hermetia Illucens)

Min Ju Kim1,2#, Sang Hun Ha3#, Jun Young Mun3, Se Rin Park3, Seon Ah Park3, So Dam Choi3, Jin Soo Kim4*
1Professor, School of Animal Life Convergence Science, Hankyong National University, Ansung 17579, Korea, 2Professor, Institute of Applied Humanimal Science, Hankyong National University, Ansung 17579, Korea, 3Graduate Student, 4Professor, College of Animal Life Science, Kangwon university, Chuncheon 24341, Korea
#These authors contributed equally to this work as co-first authors.
*Corresponding author: Jin Soo Kim, Department of Animal Industry Convergence, College of Animal Life Science, Kangwon national university, Chuncheon 24341, Korea. Tel: +82-33-250-8614, E-mail: kjs896@kangwon.ac.kr

Abstract

Supplementing feed components is becoming increasingly difficult for various reasons, including increased shipping costs, decreased capture efficiency, and global warming. For this reason, much research has been conducted globally to find alternative protein sources. The black soldier fly (BSF; Hermetia illucens) is an important feed item for nutritional accumulation and has environmental consequences. Few studies have been conducted to determine the nutritional level of the substrate, but most of these studies have involved modifying the substrate material. The aim of this study was to determine the ideal crude protein(CP) content of a substrate for BSF rearing. The experimental treatment was separated into three CP levels (low, 13.5%; medium, 20%; high, 26.5%) in the substrate. The results showed that the BSF weight (6.46%) and protein conversion ratio (1.13%) increased as the substrate CP level increased (p<0.05). In addition, protein (14.38%) and lipid (13.12%) yields were significantly increased (p<0.05). The BSF CP level increased as the substrate CP level increased (p<0.05). CP levels in the substrate upregulated the levels of certain fatty acids, essential amino acids, and non-essential amino acids (p<0.05). In conclusion, the potential values of BSF as feed were improved as the CP level of the substrate increased; However, no difference was found between medium and high CP levels in the rearing substrate. These results suggested that the substrate CP level should be at the medium level for optimal product quality. In conclusion, BSF quality is influenced by substrate nutrient levels, necessitating the development of specialized substrates for effective rearing.

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