An 84‐day feeding trial was conducted to evaluate the addition of bovine plasma protein concentrate (BPP) as a full replacement of fish meal (FM) in extruded aquafeeds for the fish Piaractus mesopotamicus at two fattening stages. Fish with an initial body weight of 105.55 ± 13.48 g (1st fattening stage) and 564.50 ± 88.02 g (2nd fattening stage) received two iso‐nitrogenous and isocaloric diets with 130 g/kg of FM (FM diet—FMD) or with 130 g/kg of BPP (BPP diet—BPPD). No significant difference in growth performance was detected between dietary treatments. Fish from the 2nd fattening stage showed decreased intestinal pH and increased haemoglobin content. At the 1st fattening stage, fish fed with BPPD presented higher levels of plasma triglycerides and cholesterol, and hepatic and whole‐body lipid content, while plasma glucose and muscular glycogen were lower at the 2nd fattening stage compared with FMD‐fed fish. Fish fed with FMD showed an increase in the thiobarbituric acid reactive substances in liver at the 1st fattening stage and intestine at the 2nd one, accompanied by higher levels of hepatic catalase at the 1st fattening stage. Results suggest BPP could completely replace FM in diets for P. mesopotamicus without affecting growth performance, when FM represents 13% of the diet.

中文翻译：

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牛血浆蛋白作为两个育肥阶段美索不达米亚虾 (pacú) 挤压水产饲料中的替代蛋白质来源

进行了一项为期 84 天的饲养试验，以评估在两个育肥阶段，在挤压水产饲料中添加牛血浆蛋白浓缩物 (BPP) 作为鱼粉 (FM) 的完全替代品。初始体重为 105.55 ± 13.48 g（第 1 育肥阶段）和 564.50 ± 88.02 g（第 2 育肥阶段）的鱼接受两种等氮和等热量饮食，含 130 g/kg FM（FM 饮食 - FMD）或 130 g/kg BPP（BPP 饮食——BPPD）。日粮处理之间未检测到生长性能的显着差异。来自第二育肥阶段的鱼表现出肠道 pH 值降低和血红蛋白含量增加。在第 1 育肥阶段，喂食 BPPD 的鱼的血浆甘油三酯和胆固醇水平以及肝脏和全身脂质含量较高，而与 FMD 喂养的鱼相比，第二个育肥阶段的血浆葡萄糖和肌糖原较低。喂食 FMD 的鱼在第 1 育肥阶段肝脏和第 2 阶段肠道中硫代巴比妥酸反应物质增加，同时在第 1 育肥阶段肝脏过氧化氢酶水平升高。结果表明，当 FM 占日粮的 13% 时，BPP 可以完全取代美索不达米克日粮中的 FM，而不会影响生长性能。