Influence of tank geometry and background color on growth performance and immune response of endangered Indian butter catfish Ompok bimaculatus

IF 3.6 2区农林科学 Q2 AGRICULTURAL ENGINEERING

Aquacultural Engineering Pub Date : 2025-04-26 DOI:10.1016/j.aquaeng.2025.102550

Chandan Debnath

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引用次数: 0

Abstract

This study investigated the effects of tank shape (circular, square, rectangular) and background color (blue, black, white) on the growth performance, immune response, and cannibalistic behavior of Ompok bimaculatus in a 12-week trial. Nine treatment combinations were tested in triplicate using a 3 × 3 factorial design. Growth parameters, immune indicators, and cannibalism rates were assessed. Results showed that circular tanks with black backgrounds yielded the best outcomes, with the highest weight gain (58.7 ± 2.3 g), lowest feed conversion ratio (1.42 ± 0.05), and superior immune responses, including the highest total leukocyte count (3.8 × 10⁴ ± 0.2 × 10⁴ cells/mm³) and respiratory burst activity (0.58 ± 0.03 OD540nm). Importantly, circular tanks with black backgrounds also exhibited the lowest incidence of cannibalism (2.3 ± 0.5 %) compared to other treatments. The interaction between tank shape and color was significant for most parameters, indicating that the effect of background color varied depending on tank geometry. Analyses revealed that circular tanks provided more uniform water flow and light distribution, while black backgrounds reduced stress-related behaviors. This study highlights the importance of optimizing tank design to enhance growth, immunity, and mitigate cannibalism in O. bimaculatus aquaculture, which is crucial for improving productivity and sustainability of this endangered catfish species.

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水箱几何形状和背景颜色对濒危印度油鲶生长性能和免疫反应的影响

在为期12周的试验中，研究了水箱形状（圆形、方形、矩形）和底色（蓝色、黑色、白色）对双马孔鱼生长性能、免疫反应和同类相食行为的影响。采用3 × 3因子设计对9个治疗组合进行三重复试验。评估生长参数、免疫指标和同类相食率。结果表明,圆形坦克用黑色背景产生最好的结果,最高的体重(58.7 ±2.3  g),饲料转化率比最低(1.42 ±0.05 ),和优越的免疫反应,包括白细胞总数最高(3.8 ×10⁴±0.2  ³×10⁴细胞/毫米)和呼吸爆发活动(0.58 ±0.03 OD540nm)。重要的是，与其他处理相比，黑色背景的圆形水箱也显示出最低的同类相食发生率（2.3 ± 0.5 %）。对于大多数参数，坦克形状和颜色之间的相互作用是显著的，这表明背景颜色的影响取决于坦克的几何形状。分析表明，圆形水箱提供了更均匀的水流和光线分布，而黑色背景减少了与应力相关的行为。本研究强调了优化水箱设计对促进双斑鲶鱼养殖的生长、免疫和减少同类相食的重要性，这对提高这种濒危鲶鱼的生产力和可持续性至关重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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