Aquaponics performance optimization: The impact of hydraulic loading rate on striped murrel (Channa striata) and lettuce (Lactuca sativa L.) production in a vermicompost-supplemented system

IF 4.3 2区农林科学 Q2 AGRICULTURAL ENGINEERING

Aquacultural Engineering Pub Date : 2025-07-08 DOI:10.1016/j.aquaeng.2025.102598

Venisza Cathy John , Ajit Kumar Verma , Murtaza Hasan , Hare Krishna , Prativa Sahu , Kishore Kumar Krishnani , Sukham Munilkumar , Prem Kumar , Tincy Varghese , Chandrakant Mallikarjun Hittinahalli

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引用次数: 0

Abstract

The rising global food crisis calls for adopting circular economy concepts like aquaponics for effective nutrient and resource reuse for sustainable development. The study for 90 days aimed at optimizing the performance of striped murrel (Channa striata)-lettuce aquaponics for different hydraulic loading rates (HLR) of 2, 4, 6, 8 and 10 m/day with vermicompost extract supplementation at 27.5 mg/L in all treatments. The increase in HLR exhibited a positive linear relation between water quality and fish growth. A parallel growth of fish and plant was recorded at 4 m/day (66.81 ± 1.59 g and 1481.56 ± 46.30 g) and 6 m/day (65.80 ± 1.80 g and 1455.91 ± 30.94 g), respectively, while at higher HLR a linear decline was observed. The study revealed that the interaction between the physico-chemical characteristics of culture water was influenced by HLR, with significant reduction in total ammonia nitrogen (TAN) and nitrite at increased HLR, while nitrate, phosphate and iron exhibited a reverse trend which increased with higher HLR. The serum glucose, cortisol, alanine transaminase (ALT), aspartate transaminase (AST) and superoxide dismutase (SOD) in liver of fish were significantly higher at 2 m/day. The results displayed that all tested HLRs were effective, while HLR of 4 and 6 m/day improved water quality, mineral content of lettuce and production of striped murrel- lettuce aquaponics. The separate quadratic regression model fitted for different HLR with fish and plant production was 5.4 and 5.9 m/day, respectively. Hence, a HLR of 5.6 m/day with vermicompost supplement was recommended as the best compromise for optimal performance of striped murrel-lettuce aquaponics.

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水培性能优化：在蚯蚓堆肥补充系统中，水力加载率对条纹鼠（Channa striata）和生菜生产的影响

日益严重的全球粮食危机要求采用水培等循环经济概念，有效地利用营养和资源，实现可持续发展。本试验旨在优化条纹鼠-莴苣在2、4、6、8和10 m/d的不同水力负荷（HLR）下，各处理蚯蚓堆肥提取物添加量为27.5 mg/L的水培效果。HLR的增加与水质与鱼类生长呈线性正相关。平行生长的鱼和植物被记录在4 米/天(66.81 ±1.59   g和1481.56±46.30  g)和6 米/天(65.80 ±1.80   g和1455.91±30.94  g),分别在更高的HLR观察线性下降。研究表明，养殖水体理化特性之间的相互作用受HLR的影响，总氨氮（TAN）和亚硝酸盐在HLR升高时显著降低，而硝酸盐、磷酸盐和铁则呈相反趋势，随着HLR的升高而升高。血清葡萄糖、皮质醇、谷丙转氨酶（ALT）、天冬氨酸转氨酶（AST）和肝脏超氧化物歧化酶（SOD）在2 m/d时显著升高。结果表明，4、6 m/d的HLR处理均有效，其中4、6 m/d的HLR处理改善了生菜的水质、矿物质含量和条形鱼-生菜水培产量。单独的二次回归模型拟合的不同HLR与鱼和植物产量分别为5.4和5.9 m/d。因此，推荐添加蚯蚓堆肥的HLR为5.6 m/d作为条纹海鼠-生菜水培的最佳折衷方案。

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来源期刊

Aquacultural Engineering 农林科学-农业工程

CiteScore

8.60

自引率

10.00%

发文量

审稿时长

>24 weeks

期刊介绍： Aquacultural Engineering is concerned with the design and development of effective aquacultural systems for marine and freshwater facilities. The journal aims to apply the knowledge gained from basic research which potentially can be translated into commercial operations. Problems of scale-up and application of research data involve many parameters, both physical and biological, making it difficult to anticipate the interaction between the unit processes and the cultured animals. Aquacultural Engineering aims to develop this bioengineering interface for aquaculture and welcomes contributions in the following areas: – Engineering and design of aquaculture facilities – Engineering-based research studies – Construction experience and techniques – In-service experience, commissioning, operation – Materials selection and their uses – Quantification of biological data and constraints