Soy protein concentrate as a substitute for fish meal in diets for juvenile Acanthopagrus schlegelii: effects on growth, phosphorus discharge and digestive enzyme activity

作者：Kalhoro, Hameeda; Zhou, Jing; Hua, Ying; Ng, Wing-Keong; Ye, Lian; Zhang, Jinzhi; Shao, Qingjun^*

来源：Aquaculture Research, 2018, 49(5): 1896-1906.

DOI：10.1111/are.13645

• Acanthopagrus schlegelii
• fish meal
• microbial phytase
• phosphorous discharge
• plant ingredients
• soybean protein concentrate

The current high demand and cost of fish meal (FM) necessities the evaluation of alternative plant protein ingredients in diets of farmed marine fish. A 56-day feeding trial was performed to study the effects of replacement of FM with soy protein concentrate (SPC) in diets of Acanthopagrus schlegelii. Diets were prepared at levels of 0%, 30%, 47.5%, 65%, 82.5% and 100% SPC, respectively, replacing FM. The results indicated no significant differences (p>.05) in % weight gain (WG) and specific growth rate of fish fed S30% to S82.5% diets compared with the control diet while, further inclusion at 100% significantly depressed growth performance. SPC inclusion and phytase supplementation significantly affected the phosphorous discharge (P-load) showing lowest value (3.83 +/- 0.53g/kg WG) in S100% compared to control (14.79 +/- 0.37g/kg WG) and in fish fed S30% diet (13.24 +/- 0.89g/kg WG) (p<.05). The results of this study showed that FM could be substituted up to 82.5% by SPC in the diet of Acanthopagrus schlegelii fingerlings (5.53 +/- 0.12g) without any adverse effects. Phytase supplementation SPC based diets could be effective in reducing the phosphorus load in the aquatic culture environment.

• 出版日期2018-5
• 单位浙江大学