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Plant protein-based diets can replace a fish meal-based diet for sustainable growth and body composition of zebrafish (Danio rerio).
bioRxiv - Scientific Communication and Education Pub Date : 2020-05-18 , DOI: 10.1101/2020.05.18.101733
Toluwalase Anthony Aiyelari , Abdul Shakoor Chaudhry

This 3 x 2 factorial study involving three diets at two stocking densities tested the effect of replacing fish meal (FM) with either soybean meal (SBM) or rapeseed meal (RSM) in diets on growth and body composition of zebrafish ( Danio rerio ). Fish were fed three times daily for eight weeks. Morphometric and water quality parameters were also determined. The survival rate of the fish ranged from 95.2 - 97.8%. The water quality remained within the acceptable limits for tropical aquaculture. The stocking density did not show any significant difference (p>0.05) for the length and weight of the fish. The length, weight and condition factors were significantly higher (p<0.05) in the fish fed FM based diet. The fish length and weight related well (R 2 ) across the diets but this was more significant for RSM than those fed the other two diets. The weight gain (WG), feed conversion ratio (FCR) and protein intake (PI) were significantly higher (p<0.05) in the fish fed the FM based diet than the other diets. No significant differences observed (p>0.05) in the specific growth rate (SGR), food intake (FI) and protein efficiency ratio (PER) among the fish fed the three diets. The crude protein CP, nitrogen-free extract (NFE) and ash contents of these fish did not differ significantly (p>0.05). However, the ether extract (EE) of the fish fed SBM diet was significantly lower (p<0.05 than the other two diets. It appears that both SBM and RSM as sustainable source to partially FM in the diets of zebrafish and similar fish species.

中文翻译:

以植物蛋白为基础的饮食可以代替以鱼粉为基础的饮食,以实现斑马鱼的可持续生长和身体组成(Danio rerio)。

这项涉及两个放养密度的三种日粮的3 x 2因子研究研究了日粮中用豆粕(SBM)或菜籽粉(RSM)代替鱼粉(FM)对斑马鱼(Danio rerio)的生长和身体组成的影响。鱼每天喂三遍,共八周。还确定了形态和水质参数。鱼的成活率为95.2-97.8%。水质保持在热带水产养殖可接受的范围内。放养密度对于鱼的长度和重量没有显着差异(p> 0.05)。在以FM为基础饲喂的鱼中,鱼的体长,体重和条件因子显着较高(p <0.05)。整个日粮中鱼的长度和体重相关性很好(R 2),但是对于RSM而言,这比喂食其他两种日粮的鱼更重要。饲喂基于FM的饲料的鱼的体重增加(WG),饲料转化率(FCR)和蛋白质摄入(PI)显着高于其他饲料(p <0.05)。饲喂三种日粮的鱼之间的比生长速率(SGR),食物摄入(FI)和蛋白质效率比(PER)均未观察到显着差异(p> 0.05)。这些鱼的粗蛋白CP,无氮提取物(NFE)和灰分含量没有显着差异(p> 0.05)。然而,饲喂SBM日粮的鱼的乙醚提取物(EE)明显低于其他两种日粮(p <0.05)。似乎斑马鱼和类似鱼类日粮中SBM和RSM都是部分FM的可持续来源。05)在鱼类中喂食基于FM的饮食比其他饮食。喂食三种日粮的鱼之间的比生长率(SGR),食物摄入量(FI)和蛋白质效率比(PER)之间没有观察到显着差异(p> 0.05)。这些鱼的粗蛋白CP,无氮提取物(NFE)和灰分含量没有显着差异(p> 0.05)。然而,饲喂SBM日粮的鱼的乙醚提取物(EE)明显低于其他两种日粮(p <0.05)。似乎斑马鱼和类似鱼类日粮中SBM和RSM都是部分FM的可持续来源。05)在鱼类中,以FM为基础的饮食要比其他饮食多。喂食三种日粮的鱼之间的比生长率(SGR),食物摄入量(FI)和蛋白质效率比(PER)之间没有观察到显着差异(p> 0.05)。这些鱼的粗蛋白CP,无氮提取物(NFE)和灰分含量没有显着差异(p> 0.05)。然而,饲喂SBM日粮的鱼的乙醚提取物(EE)明显低于其他两种日粮(p <0.05)。似乎斑马鱼和类似鱼类日粮中SBM和RSM都是部分FM的可持续来源。这些鱼的无氮提取物(NFE)和灰分含量没有显着差异(p> 0.05)。然而,饲喂SBM日粮的鱼的乙醚提取物(EE)明显低于其他两种日粮(p <0.05)。似乎斑马鱼和类似鱼类日粮中SBM和RSM都是部分FM的可持续来源。这些鱼的无氮提取物(NFE)和灰分含量没有显着差异(p> 0.05)。然而,饲喂SBM日粮的鱼的乙醚提取物(EE)明显低于其他两种日粮(p <0.05)。似乎斑马鱼和类似鱼类日粮中SBM和RSM都是部分FM的可持续来源。
更新日期:2020-05-18
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