Effects of poultry by-product meal and complete replacement of fish oil with alternative oils on growth performance and gut health of rainbow trout (Oncorhynchus mykiss): a FEEDNETICS™ validation study.

IF 2.3 2区 农林科学 Q1 VETERINARY SCIENCES BMC Veterinary Research Pub Date : 2024-10-17 DOI:10.1186/s12917-024-04324-0
Imam Hasan, Simona Rimoldi, Biagina Chiofalo, Marianna Oteri, Micaela Antonini, Rosangela Armone, Violeta Kalemi, Laura Gasco, Genciana Terova
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Abstract

Background: Aquaculture, traditionally a form of biotechnology, has evolved to integrate innovative biotechnological applications, such as advanced feed formulations, aimed at improving the growth performance and health of farmed fish species. In the present study, the effects of feeding rainbow trout with novel feed formulations were investigated. Fish growth, gut and liver morphology, the concentration of fatty acids in the fillet, and volatile fatty acids in the gut were assessed. The study also validated scenarios from in vivo experiments using a nutrient-based model called FEEDNETICS™. This globally used model serves as a tool for data interpretation and decision support in the context of precision fish farming.

Methods: Alternative protein and oil sources, including poultry by-product meal (PBM) and natural algae oil, were explored as sustainable replacements for fishmeal (FM) and fish oil (FO). A 90-day feeding trial was conducted using rainbow trout, comparing two isoproteic, isolipidic and isoenergetic diets. The control diet contained 15% FM, 5% PBM, and 8% FO, while the test diet replaced FM with 15% PBM and 5% feather meal hydrolysate (FMH), and fully substituted FO with VeraMaris® natural algae oil and rapeseed oil.

Results: PBM successfully replaced FM protein without negatively affecting feed intake, growth performance or feed utilization in trout. The combination of PBM and natural algae oil was well tolerated by the trout and showed no negative effects on gut health. A detailed analysis of fatty acids in the fillet revealed that PUFAs of the n3 and n6 series were significantly higher in the PBM group than in the FM group. Values of fatty acid-related health indexes, including atherogenicity index, and thrombogenicity index, confirmed the high nutritional value of trout filet, thus representing a healthy product for human. In addition, the predictions using the FEEDNETICS™ indicated that the tested novel alternative formulations are economically viable. The validation of the model for fish growth resulted in a Mean Absolute Percentage Error (MAPE) of 8%.

Conclusions: The FEEDNETICS™ application enhances our ability to optimize feeding strategies and improve production efficiency in the aquaculture industry. VeraMaris® algae oil and PBM could serve as viable and sustainable raw materials for fish feed, promoting environmentally friendly aquaculture practices.

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家禽副产品粉和替代油完全替代鱼油对虹鳟鱼(Oncorhynchus mykiss)生长性能和肠道健康的影响:FEEDNETICS™ 验证研究。
背景:水产养殖历来是生物技术的一种形式,如今已发展到集成创新生物技术应用,如先进的饲料配方,旨在改善养殖鱼类的生长性能和健康状况。本研究调查了用新型饲料配方喂养虹鳟鱼的效果。对鱼类的生长、肠道和肝脏形态、鱼片中脂肪酸的浓度以及肠道中挥发性脂肪酸进行了评估。该研究还利用一个名为 FEEDNETICS™ 的营养模型验证了体内实验的情景。这一全球通用的模型可作为精准养鱼的数据解读和决策支持工具:方法:探索了替代蛋白质和油脂来源,包括家禽副产品粉(PBM)和天然藻油,作为鱼粉(FM)和鱼油(FO)的可持续替代品。使用虹鳟鱼进行了为期 90 天的喂养试验,比较了两种等蛋白、隔离脂和等能量日粮。对照日粮中含有15%的羽毛粉、5%的PBM和8%的鱼油,而试验日粮则用15%的PBM和5%的羽毛粉水解物(FMH)替代了羽毛粉,并用VeraMaris®天然藻油和菜籽油完全替代了鱼油:结果:PBM成功地替代了羽毛粉蛋白质,而不会对鳟鱼的采食量、生长性能和饲料利用率产生负面影响。鳟鱼对 PBM 和天然藻油的组合耐受性良好,对肠道健康没有负面影响。对鱼片中脂肪酸的详细分析显示,PBM 组中 n3 和 n6 系列的 PUFAs 明显高于 FM 组。与脂肪酸相关的健康指数值(包括动脉粥样硬化指数和血栓形成指数)证实了鳟鱼片的高营养价值,因此是人类的健康产品。此外,使用 FEEDNETICS™ 进行的预测表明,所测试的新型替代配方在经济上是可行的。鱼类生长模型的验证结果是平均绝对百分比误差(MAPE)为 8%:FEEDNETICS™应用提高了我们优化喂养策略和提高水产养殖业生产效率的能力。VeraMaris® 藻油和 PBM 可作为可行的、可持续的鱼饲料原料,促进环境友好型水产养殖业的发展。
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来源期刊
BMC Veterinary Research
BMC Veterinary Research VETERINARY SCIENCES-
CiteScore
4.80
自引率
3.80%
发文量
420
审稿时长
3-6 weeks
期刊介绍: BMC Veterinary Research is an open access, peer-reviewed journal that considers articles on all aspects of veterinary science and medicine, including the epidemiology, diagnosis, prevention and treatment of medical conditions of domestic, companion, farm and wild animals, as well as the biomedical processes that underlie their health.
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