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Article

The Effects of Dietary Fermented Soybean Meal Supplementation on the Growth, Antioxidation, Immunity, and mTOR Signaling Pathway of Juvenile Coho Salmon (Oncorhynchus kisutch)

by
Qin Zhang
,
Qiuyue Yang
,
Mengjie Guo
,
Fanghui Li
,
Meilan Qin
,
Yi Xie
,
Jian Xu
,
Yongqiang Liu
* and
Tong Tong
*
Guangxi Marine Microbial Resources Industrialization Engineering Technology Research Center, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Guangxi Minzu University, 158 University Road, Nanning 530008, China
*
Authors to whom correspondence should be addressed.
Fishes 2023, 8(9), 448; https://doi.org/10.3390/fishes8090448
Submission received: 20 August 2023 / Revised: 30 August 2023 / Accepted: 31 August 2023 / Published: 5 September 2023
(This article belongs to the Special Issue Fish Nutrition, Metabolism and Physiology)
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Abstract

This experiment aims to investigate the effects of partial replacement of fish meal (FM) by soybean meal (SBM) and/or fermented soybean meal (FSBM) on the growth, serum biochemistry, digestion, antioxidation, immunity, and mTOR signaling pathway of juvenile coho salmon (Oncorhynchus kisutch). Four iso-nitrogen and iso-lipid diets were designed and fed to four groups of juvenile coho salmon (152.25 ± 2.96 g) in triplicate for 10 weeks. The four diets were the G0 diet (control group, containing 28% FM protein), the G1 diet (containing 10% SBM protein and 18% FM protein), the G2 diet (containing 5% SBM protein, 5% FSBM protein, and 18% FM protein), and the G3 diet (containing 10% FSBM protein and 18% FM protein). It was found that compared with the G0 diet (control group), the activities of catalase (CAT), superoxide dismutase (SOD), pepsin, trypsin, α-amylase, and lipase, and the expression levels of mammalian target of rapamycin (mtor), protein kinase B (akt), phosphatidylinositol 3-kinase (pi3k), plant ribosome S6K protein kinase (s6ks), and lysozyme (lyz) genes, of juvenile coho salmon fed the G3 diet increased significantly (p < 0.05), and the expression levels of tumor necrosis factor (tnf-α), interleukin-1β (il-1β), and interleukin-6 (il-6) genes of juvenile coho salmon fed the G3 diet decreased significantly (p < 0.05). However, there were no significant differences in growth, muscle composition, and serum biochemistry of juvenile coho salmon fed the G3 diet compared with the G0 diet (p > 0.05). In conclusion, replacing 10% FM protein with FSBM protein could improve the digestion, antioxidation, immunity, and mTOR signaling pathway of juvenile coho salmon.
Keywords: coho salmon; fermented soybean meal; antioxidation; immune; mTOR signaling pathway coho salmon; fermented soybean meal; antioxidation; immune; mTOR signaling pathway

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MDPI and ACS Style

Zhang, Q.; Yang, Q.; Guo, M.; Li, F.; Qin, M.; Xie, Y.; Xu, J.; Liu, Y.; Tong, T. The Effects of Dietary Fermented Soybean Meal Supplementation on the Growth, Antioxidation, Immunity, and mTOR Signaling Pathway of Juvenile Coho Salmon (Oncorhynchus kisutch). Fishes 2023, 8, 448. https://doi.org/10.3390/fishes8090448

AMA Style

Zhang Q, Yang Q, Guo M, Li F, Qin M, Xie Y, Xu J, Liu Y, Tong T. The Effects of Dietary Fermented Soybean Meal Supplementation on the Growth, Antioxidation, Immunity, and mTOR Signaling Pathway of Juvenile Coho Salmon (Oncorhynchus kisutch). Fishes. 2023; 8(9):448. https://doi.org/10.3390/fishes8090448

Chicago/Turabian Style

Zhang, Qin, Qiuyue Yang, Mengjie Guo, Fanghui Li, Meilan Qin, Yi Xie, Jian Xu, Yongqiang Liu, and Tong Tong. 2023. "The Effects of Dietary Fermented Soybean Meal Supplementation on the Growth, Antioxidation, Immunity, and mTOR Signaling Pathway of Juvenile Coho Salmon (Oncorhynchus kisutch)" Fishes 8, no. 9: 448. https://doi.org/10.3390/fishes8090448

APA Style

Zhang, Q., Yang, Q., Guo, M., Li, F., Qin, M., Xie, Y., Xu, J., Liu, Y., & Tong, T. (2023). The Effects of Dietary Fermented Soybean Meal Supplementation on the Growth, Antioxidation, Immunity, and mTOR Signaling Pathway of Juvenile Coho Salmon (Oncorhynchus kisutch). Fishes, 8(9), 448. https://doi.org/10.3390/fishes8090448

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