期刊
AQUACULTURE RESEARCH
卷 49, 期 5, 页码 1896-1906出版社
WILEY
DOI: 10.1111/are.13645
关键词
Acanthopagrus schlegelii; fish meal; microbial phytase; phosphorous discharge; plant ingredients; soybean protein concentrate
类别
资金
- Zhejiang Provincial Bureau of Science and Technology [2015C02020, 2015C03010]
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.
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