Partial replacements of fishmeal by autoclaved shrimp processing by-product modulates the growth, digestive enzymes, immune-antioxidant, and economic performances for Nile tilapia (Oreochromis niloticus) juveniles

IF 2.4 3区农林科学 Q2 FISHERIES

Aquaculture International Pub Date : 2025-10-01 DOI:10.1007/s10499-025-02232-0

Suzan O. M. El-Werwary, Asia Yousry Mohamed Ali, Eman A. Sabry, Mohamed N. Monier, Mohsen Abdel-Tawwab

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Abstract

In the current investigation, the fishmeal (FM) protein was substituted by shrimp processing by-product (SPB) protein in feeds for Nile tilapia (Oreochromis niloticus) juveniles. Six isonitrogenous and isocaloric feeds were designed to substitute the FM protein with graded levels of SPB protein, i.e., 0% (SPB0), 10% (SPB10), 20% (SPB20), 30% (SPB30), 40% (SPB40) and 50% (SPB50). Nile tilapia juveniles (13—15 g) were allocated into 18 100-L aquaria (15 fish per aquarium) and administered the evaluated feed three times daily until evident satiety for 90 days. It was detected that Nile tilapia given SPB diets exhibited enhanced (P > 0.05) growth indices, especially at SPB40, compared to the control (SPB0). Related to the FM-based diet (SPB0), serum glucose and cortisol did not show substantial (P > 0.05) changes; while, activities of alanine and aspartate aminotransferases were markedly (P > 0.05) declined at SPB40 and SPB50 with no alterations between them. In comparison to the control diet (SPB0), SPB40-fed fish exhibited highest values of total protein, immune, and antioxidant biomarkers. The simple economic assessment suggested that incorporating 40% SPB instead of FM protein in O. niloticus diets represents the optimal choice, where it could reduce the feeding cost by 5.27% for ton fish gain. Interestingly, it is recommended to substitute 40% of FM protein with SPB in feeds for Nile tilapia, O. niloticus.

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用蒸虾加工副产物部分替代鱼粉可调节尼罗罗非鱼幼鱼的生长、消化酶、免疫抗氧化剂和经济性能

本研究以尼罗罗非鱼（Oreochromis niloticus）幼鱼为原料，用虾加工副产物（SPB）蛋白替代鱼粉蛋白。设计6种等氮等热量饲料，用不同水平的SPB0（0%）、10% （SPB10）、20% （SPB20）、30% （SPB30）、40% （SPB40）和50% （SPB50）替代鱼粉蛋白。将尼罗罗非鱼幼鱼（13-15 g）分配到18个100-L的水族箱中（每个水族箱15尾），每天饲喂3次评价饲料，直至明显饱腹，持续90天。结果表明，与对照组（SPB0）相比，添加SPB饲料的尼罗罗非鱼的生长指数显著提高（P > 0.05），尤其是在SPB40时。与以脂肪为基础的饮食（SPB0）相关，血清葡萄糖和皮质醇无显著变化（P > 0.05）；而在SPB40和SPB50时，丙氨酸和天冬氨酸转氨酶活性显著下降（P > 0.05），两者之间无显著差异。与对照饲料（SPB0）相比，喂食spb40的鱼显示出最高的总蛋白、免疫和抗氧化生物标志物。简单的经济评价表明，在尼罗沼虾饲料中添加40%的SPB蛋白代替FM蛋白是最优选择，可使吨鱼增重的饲养成本降低5.27%。有趣的是，建议尼罗罗非鱼饲料中用SPB代替40%的鱼粉蛋白。

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来源期刊

Aquaculture International 农林科学-渔业

CiteScore

5.10

自引率

6.90%

发文量

204

审稿时长

1.0 months

期刊介绍： Aquaculture International is an international journal publishing original research papers, short communications, technical notes and review papers on all aspects of aquaculture. The Journal covers topics such as the biology, physiology, pathology and genetics of cultured fish, crustaceans, molluscs and plants, especially new species; water quality of supply systems, fluctuations in water quality within farms and the environmental impacts of aquacultural operations; nutrition, feeding and stocking practices, especially as they affect the health and growth rates of cultured species; sustainable production techniques; bioengineering studies on the design and management of offshore and land-based systems; the improvement of quality and marketing of farmed products; sociological and societal impacts of aquaculture, and more. This is the official Journal of the European Aquaculture Society.