Partial substitution of soybean meal with fermented soybean residue in diets for juvenile largemouth bass,Micropterus salmoides

Abstract

A feeding trial was conducted to investigate the effects of partial replacement of soybean meal (SBM) with fermented soybean residue (FSR) on growth performance, body composition and plasma biochemical parameters of largemouth bass, Micropterus salmoides. Soybean residue was fermented with a mixture of microorganisms (Bacillus subtilis, Lactobacillus spp. and Molasses yeast) using the solid‐state fermentation. Four isonitrogenous (crude protein 430 g/kg) and isoenergetic (gross energy 18 MJ/kg) diets were formulated by replacing 0 (the control), 20, 40 and 60g/kg of protein from SBM with FSR (FSR0, FSR20, FSR40 and FSR60, respectively). Each diet was fed to four replicate groups of fish (initial body weight: 17.1 ± 0.19 g) for 12 weeks. Results showed that dietary FSR substitution significantly improved growth of juvenile largemouth bass. The weight gain, specific growth rate and protein efficiency ratio were all significantly improved by dietary FSR level up to 40g/kg substitution level (p < .05) and then levelled off beyond this level. Fish fed the diet with 40g/kg and 60g/kg protein from FSR had lower feed conversion ratio than the control group (p < .05). The hepatosomatic index, viscera ratio and liver lipid content significantly decreased with increasing dietary FSR level. Total protein content, superoxide dismutase and alkaline phosphates activities in plasma were lower in fish fed the control diet (p < .05) than the other groups. However, both alanine aminotransferase and aspartate transaminase were higher in fish fed the control diet (p < .05) compared to the other treatments. The plasma catalase activity significantly increased with increasing dietary FSR level, while plasma triglyceride, total cholesterol, glucose and malondialdehyde contents significantly reduced. No significant difference was observed in the glutathione peroxidase activity among dietary treatments. These findings demonstrated that replacing dietary SBM with FSR has beneficial effects on growth of M. salmoides, and the best growth performance was obtained at 40g/kg replacement for SBM protein. In addition, there is a great potential to apply FSR to improve lipid metabolism and antioxidant capacity of M. salmoides.

Soya bean‐based diets plus probiotics improve the profile of fatty acids, digestibility, intestinal microflora, growth performance and the innate immunity of beluga (Huso huso)

“…Beluga season and geographical area, the main reason usually comes from the diet (Shearer, 1994). In largemouth bass (Jiang et al, 2018), orange-spotted grouper (Shiu et al, 2015), olive flounder (Kim, Pham, Kim, Son, & Lee, 2010) and Florida pompano (Novriadi et al, 2018), similar results with inclusion fermentation SBM to diet were observed.…”

Measuring the Substitution of Vegetable Waste Fermented Rumen Fluid with Tofu Waste in Vannamei Shrimp Feed

“…It can be seen from the total digestibility and nutrient juvenile vannamei shrimp in the treatment higher. This is in line with Jiang et al [27] states that the substitution of soybean meal with the fermented soybean residues in feed can improve the growth of juvenile largemouth bass, weight gain, specific growth rate.…”

An evaluation of replacing fish meal with fermented soybean meal in the diets of largemouth bass ( Micropterus salmoides ): Growth, nutrition utilization and intestinal histology

“…In addition, replacing dietary SBM with fermented soybean residue from solid‐state fermentation with a microorganism mixture ( Bacillus subtilis , Lactobacillus spp. and Molasses yeast ) showed beneficial effects on the growth of largemouth bass (Jiang et al., 2018). But the potential of FSBM in FM replacement of largemouth bass has not been reported at present.…”