Mineral supplementation in biofloc influences growth and haemato-biochemical indices of Genetically Improved Farmed Tilapia reared in inland saline ground water

IF 3.6 2区农林科学 Q2 AGRICULTURAL ENGINEERING

Aquacultural Engineering Pub Date : 2023-12-12 DOI:10.1016/j.aquaeng.2023.102386

Susitharan V , Sreedharan Krishnan , Pankaj Kumar , Kapil Sukhdhane , A. Sathiya Kala , A.M. Babitha Rani

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引用次数: 0

Abstract

An experiment for a period of 60 days was performed with species specific mineral supplementation in biofloc system for GIFT tilapia reared in inland saline water. Four different concentrations of formulated mineral mixture (10, 15, 20, 25 g L⁻¹) were supplemented in the subculture of biofloc inoculum for different treatments (T1, T2, T3, and T4). In contrast, two control groups (conventional culture system (C) and a standard biofloc control (BC) devoid of mineral supplements) were maintained. Major water quality parameters were optimal except alkalinity and pH, which were fluctuated in the treatment groups, and higher turbidity was noticed only in the T4 group. The minerals supplemented groups had lower levels of TAN, nitrite (NO₂) and nitrate (NO₃) than conventional biofloc system (BC). Floc parameters such as floc volume, total suspended solids (TSS), total dissolved solids (TDS) and total solids (TS) were higher than the control. Haematological parameters Hb (haemoglobin) and WBC (white blood corpuscles) of fish reared in treatments were higher, ranging from (8.2 ± 0.64 −10.47 ± 0.66 g dL⁻¹) and (187.83–215.17 ± 6.58 per cumm) respectively (P < 0.05) compared to both the controls. Serum parameters of fish was recorded to be higher in T2. The proximate composition analysis revealed an enhanced crude protein content (33.22 ± 1.00%, 67.68 ± 0.2%) and crude lipid (5.24 ± 0.22% & 15.18 ± 0.58%) (P > 0.05) content from BC, but ash content (39.11 ± 0.1% & 20.35 ± 0.21%) from T4 in both dried biofloc and fish samples were higher than rest of the groups. Specific growth rate (SGR) and weight gain (WG) were recorded to be significantly higher in the T2 group. Feed conversion ratio (FCR) was observed to be better in all the treatments and the BC group than conventional control. The current investigation showed that subculture of biofloc inoculum supplemented with formulated mineral mix of 15 g L⁻¹ could be effective in terms of water quality maintenance, feed utilization, growth, survival and biochemical parameters of GIFT tilapia reared in inland saline ground water.

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在生物絮凝物中添加矿物质可影响内陆盐碱地水中饲养的基因改良罗非鱼的生长和血液生化指标

对在内陆盐水中饲养的 GIFT 罗非鱼进行了为期 60 天的生物絮团系统物种特定矿物质补充实验。在不同处理（T1、T2、T3 和 T4）的生物絮团接种物亚培养液中添加了四种不同浓度的配制矿物质混合物（10、15、20、25 g L-1）。相比之下，保留了两个对照组（传统养殖系统（C）和不添加矿物质的标准生物絮凝物对照组（BC））。除碱度和 pH 值在各处理组均有波动外，其他主要水质参数均达到最佳状态，只有 T4 组的浑浊度较高。与传统的生物絮凝系统（BC）相比，补充矿物质的各组的总氮（TAN）、亚硝酸盐（NO2）和硝酸盐（NO3）水平较低。絮凝物参数，如絮凝物体积、总悬浮固体（TSS）、总溶解固体（TDS）和总固体（TS）均高于对照组。与对照组相比，处理组饲养的鱼的血液学参数 Hb（血红蛋白）和 WBC（白血球）分别在（8.2 ± 0.64 -10.47 ± 0.66 g dL-1）和（187.83-215.17 ± 6.58 per cumm）之间（P < 0.05）。根据记录，T2 鱼的血清参数较高。近似成分分析显示，BC 组的粗蛋白含量（33.22 ± 1.00%，67.68 ± 0.2%）和粗脂肪含量（5.24 ± 0.22% & 15.18 ± 0.58%）（P >0.05）均高于对照组，但 T4 组的干生物絮团和鱼肉样品的灰分含量（39.11 ± 0.1% & 20.35 ± 0.21%）均高于其他组。根据记录，T2 组的特定生长率（SGR）和增重（WG）明显高于 T4 组。所有处理和 BC 组的饲料转化率（FCR）均优于常规对照组。目前的调查表明，在生物絮凝物接种体中添加 15 g L-1 的配方矿物质混合物，对内陆盐碱地水域饲养的 GIFT 罗非鱼的水质保持、饲料利用、生长、存活和生化指标均有效。

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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